It always used to seem like a large room but that is when they were young and now since they are older. It seems just normal, but still a massive bed for having all sorts of fun~. Frisk loved the bed due to them playing music when they moved but only when they are completely under the covers was the drawback. 

Chara shook her head at them, but used that time as they were exploring to check out the other rooms that were with this one room due to the age and both of them being similar species to the monster's hand? Chara had to inspect the room before Frisk was allowed to enter due to some of the stuff the "gracious" host provided for them. But as a bonus, they got more compartments to the room so Frisk stayed in the bedroom while Chara headed off to the restroom and the bathtub.

Chara was by herself due to Frisk being absorbed by the bed and the music it plays as he moves. She prepared for a quick bath or maybe a long one and then a shave during the bath and maybe some ointment afterward. She got everything ready and then checked on Frisk to see what that knucklehead was doing and he was still occupied with that bed and its music. 

After checking up on him, she smiled and went back to get the bath ready for herself. She checked the temperature and had to drain the water several times due to the coldness of the water, and that is due to most people wanting cold showers or baths. Finally, she got the right temperature and then proceed to begin to undress. First her leggings and then her sweater ...

Frisk stopped everything after he heard the sound of water and then went to go check on Chara. You know, only for her safety, it's not like he wanted to peek or anything. He looked to see that Chara somehow changed her undergarments to black ones when they were on their journey. He realized that as he looked toward Chara. His heart began to race and determination begins to swell within him and thus his soul popped out.

Chara notices the soul and realized Frisk was peeping on her. She stares forward slightly embarrassed of this situation. "Frisk you should really have some type of privacy." She says as she shuts the door.

 Then she realizes that Frisk soul is still with her. She smirks and touches the soul already full knowing the effect of what it might cause on Frisk. I guess it a little payback from peeping on her. She feels his soul with her damp hands and Frisk feels pleasure but to his mind, it's unknown origins for the most part. Frisk is gasping and silently moaning from this experience that he didn't know what to think of as he silently moves back to the bed.

The pleasure was overwhelming for Frisk and then suddenly it stopped and now Frisk felt like they were drenched in water. It was confusing and exhilarating to the least for Frisk. As Frisk was recuperating from that immense pleasure he just felt he felt something more pleasurable now. He felt like his whole being was in pleasure. It was intoxicating to his very being. Then it slowly begins to fade once more and his soul returns back to his person.

Frisk was panting and slightly confused it such a rush of pleasure and emotions. He needed some water maybe some room service would be nice and maybe a chocolate milkshake for Chara as a way to say sorry for peeping.

He orders a chocolate milkshake and some water are he calms himself down which took a few minutes. It was hard to overcome all that pleasure he took at once. It almost overwhelmed his entire psyche. But he did with some effort and determination and then after that got Chara that milkshake.

But much to Frisk dismay and without his knowledge, someone had spiked the chocolate milkshake, but the not the water actually the water was replaced with weird smelling alcohol that smells very similar to water. I guess its monster alcohol.

Chara manages to finish up with her bath and her shave with ease but her slip of Frisk soul in the water has splashed onto the clothes that she was going to wear and now she has to wait for them to dry which won't take long but it will take long enough for Frisk to get worried.

She smiles that the undergarments are still dry so she puts those own and a towel over her body, and set her clothes out to dry. She exited the restroom due to it being overly warm to her senses. She made sure that her clothes would dry quickly.

She walked out just as the room service came in and gave Frisk the chocolate milkshake and alcohol from Chara's perspective. Chara looks at Frisk for an explanation for the alcohol and the chocolate milkshake.

"I got some water for me and a chocolate milkshake for you," Frisk says with some pride behind it.

Chara frowns and shakes her head. "That cup of water they got you is actually not water but whatever just give me the chocolate milkshake alright," Chara says just wanting the chocolate milkshake.

She realizes that she has had literally no chocolate at all for about 12 runs, and this will be the first in the last run of her hard work. She smiles at it and before she can taste the amazingness of that Chocolate milkshake she goes back and gets her clothes which are relatively dry. She comes back to Frisk on the bad looking up and an empty cup next to the milkshake.

Chara shakes her head and begin to drink her milkshake drinking all of it within seconds and then comes to the realization all too late. Someone or something had spiked her chocolate milkshake. The alcohol is strong yet tasty. If it wasn't so strong I think Chara might have been able to do something about this next part.

Her mind when fuzzy and then blank and suddenly it turns to lust. To be honest I'm not sure what happened but it did and this lust was powerful. Chara usually just suppresses her feelings like the rest of her feelings, but the alcohol and wasn't helping her either. It was a surging wave and she had to stop it with only hands. It wasn't going too great for her and then she looked at Frisk with lust in her eyes as they begin to glow red as her right-hand touches her face and her tongue sticking slightly out.

She wanted him badly Nah she needed him and right now willing to do anything for him. Then Frisk begin to stir after drinking some of that alcohol and then spilling the rest. He looked over Chara and backed up onto the couch completely shocked. What could have made her so lustful? Then he realized as well. Someone had spiked the chocolate milkshake with some sort of drug maybe.

As Frisk was realizing this Chara crawled towards him and when Frisk came back to his senses, Chara was on top of him and she smelled like the buttercups or at least something around there. Frisk was enraptured by her scent and then they kissed and kissed. The kissed deepened and flowed like a river as it progressed.

The temperature rose just as lust until things were hotter inside that it was outside in Hot land, but things got hotter still and things progressed. Lust, sweat, and love was in the air and circling the two who are embracing. Both their heart and souls were wanting to be one but first, there are steps to one such thing or at least they took steps before reaching that point.

At First is just foreplay. Groping of each others body. In this stage of things, Frisk was more dominant for the most part when it came to this. Then things escalated to out of control. When they groping each other Chara begin to stroke Frisk softly and slowly teasing him.

As Chara watches Frisk Moan softly as she continues to stroke his member under his shorts. She smirks she loved seeing him in pleasure especially when she was the cause of it. It was addicting to her. Then she slowly being to undress Frisk First his shirt and then his shorts and his underwear was last.

Chara blush bright red as she saw how big Frisk's member was. It was a lot bigger than she thought it was.It was about 11' 1/2. She smirks at Frisk as her face gets closer and closer to his member. She began to lick his tip and up and down his shaft causing to him to have some precum spill out. Chara as lustful as she was. Licks all of it up making sure not waste any of it. After that little spiel, she begins to suck his member making sure not to cause any discomfort at all to Frisk only pleasure and that is what she did. She begins to deepthroat him want him to feel only pleasure.

Frisk was a mess under Chara and her amazing mouth. He could feel himself struggling not to cum due to the amount of pleasure he was feeling but he felt cheated slightly. He wanted to give her pleasure as well. It took great willpower and determination to not cum to Chara or at least hold on until later.

Chara was used to begin dominant regardless of the timeline and regardless of gender but this was different. Frisk took Chara with his hands getting on top of her as he opened his eyes revealing his bright golden color eyes. Chara was pleasantly surprised at this happened, but more than that it was Frisk's eyes.

During this whole adventure, Frisk had yet to open their eyes. Chara had little time to admire them due to Frisk begin so dominant and forceful. Chara had to admit she like being submissive in this stage of things. Frisk looked at Chara and then used his overwhelming determination to shed her clothes to bits. 

He saw how wet Chara had got and begin to fondle her breasts first making sure foreplay was almost complete.He could hear her moan loudly under his grip. He began to suck on her nipple making the hand that was fondling that breast goes down to her entrance and began to fondle that until he could feel her close to cumming as he was before. When he pulled his fingers away from Chara's entrance he saw how wet they were with Chara's juices. It was intoxicating, but alas when the body receives something new it wants more and more of that and so Frisk decided to take it a step further, or at least that is what he was planning but like all timelines, Chara is in control.

Frisk was about to take it to the final step while he was still being dominant but in Chara's eyes Frisk was taking to long and so she pushed him onto his back and straddled him and looked down onto his body and she lifts herself up and takes his member into herself. She eases herself onto his member taking into herself as she screams and moans in pleasure. It was so big for her almost too much for her, but with determination almost anything is possible and their determination rivals that of worlds. Their love and their passion were bursting and dwarfing any and all others in the area and in the underground.

She tries to get used to his enormous size but its so big for her and the pleasure she is feeling is immense. So immense that her soul pops out of her revealing her black soul surrounded by determination red. It began to glow brighter and brighter as Chara continued to ride Frisk's member.

Chara continued to ride him with all of her determination and without any logic. Any Logic Left was thrown right out the window like Papyrus jumped out at Undyne's house. The only thing left was a pleasure and the goal was obtaining even more pleasure. Chara continued to ride Frisk to satisfy her lust but it wasn't enough. Her being dominant in this timeline isn't enough for her.

Frisk was overwhelmed at first by the immense pleasure but soon got his bearing in check and began to thrust upwards not wanting Chara to do all the work in this session. He could see Chara's eyes flickering between Red and then to brown, it was dazzling, to say the least.

As Frisk and Chara continued on in this way. Frisk could feel Chara's lust wasn't a hard thing to do. Due to her logic thrown out the window. He could feel her overwhelming lust and the effect it had on her. He was surprised that she held so much back until she drank that probably spiked milkshake.

He looked at her and want to satisfy his own lust while also satisfying hers, but right in that moment, he wanted to kiss her to show her that he loved her when he knew words had little merit in her eyes or at least that is what he thought. He sat up and kissed her and in doing so almost sending Chara almost over the edge due to how Frisk went into her when he sat up to kiss her.

Their passion and their love grew faster and faster but Chara was not going to beat in this or at all. She had the determination and she was going to use it to last longer than Frisk and besides, there were things that she needed to do without Frisk by her side, and that right there filled her determination through the roof.

Their determination battle is a battle of passion, pleasure, and lust. It filled the room with a red glow. Their determination was in a gridlock as Frisk switched their position to missionary. Frisk was now ravaging Chara's insides but Chara was loving every single moment of it. It was like a drug for her and she might get addicted to this type of sex.

But like all great things, it must come to an end. But which one will climax first. It was a battle to see who would cum first and to be fair it was a sort of tie. Chara climaxed first and then Frisk right after her but Chara's lasted longer so you tell me who came first because I can't heads or tails of this.

(Well anyways back to the story)

Their climax was so strong that one of them passed out from the sheer amount of pleasure he felt. Yes, you read that right Frisk passed out from his climax while Chara was still up and still very much awake. Though her legs were like jello and she couldn't move them all that well she still had the will to summon some of her determination. She stood and moved forward to go see one of her dear friends.(Sarcasm  for last bit of the last sentence)

A/N

Well, that's it for this chapter I hoped you enjoyed I sure did but it was embarrassing to right most of it. Also, thank you Insane_Hipster_Teto for all of your help and inspiration! All thank you to AphIsMylife for some help too! Also, I wanted to mention that a certain part of the story where Alcohol was used. It is in fact "Monster Alcohol" But in the sense that it isn't alcohol but more of a stimulating plant to open any person's mind and do something they  hold themselves back this liquid was used in the war times but it had many effects that were useful for the monster to get rid of spies if there were any. Thankfully there wasn't but it was still made by Gaster. The reason Chara call it alcohol and so do I due to being the author is that of the way Chara's see it as alcohol. Well, her time on the surface wasn't the nicest of ones and she had met Human's alcohol in a very negative light. So I just wanted to clear it up a bit due to the way I felt about that particular part.

Also, thank you guys for 1380 views that are mindblowing for me and the 130 votes what is this? Am I going crazy or is this real. Thank you guys so much for all the support and don't worry I'll try to write a bit quicker now that this is done and thank you guys once again for all the support!