(Warning this chapter contents some R18+ nudity you been warned)

(The banshee is from Mass effect 3)

???: Twist that, and switch the button and DONE!

a young adult named Y/n has finished building a multiverse portal gun

(A/N Don't tell me how he manged to built a portal gun cause I don't know)

Y/n was a massive nerd in science fiction from movies and games but one of the favourite was mass effect.

but first he used his portal to get some stuff

Timeskip

after many traveling and getting some multiverse stuff and place them in his room, he sets it to the mass effect universe.

y/n put on his gear that he got from the dead space.

Y/n: done now Let me just...

y/n puts the coordinates on the portal gun and shoots the wall and a green portal appeared

Y/n: Woohoo here I come!

y/n jumps into the portal

Thessia

a portal appeared and y/n jumps out.

Y/n: Alright I'm here and it appears I'm in Thessia but in what time?

But then

Y/n turned his head slowly and saw the reapers far away.

Y/n: Oh shit I'm in the reaper war!

y/n tries to fire a portal but it was low on power and it went on recharge mode.

Y/n: (Groans) Oh the Fuck sake! okay calm down y/n just find a hiding spot and wait for the portal gun to recharge and get out of there at least I got my guns.... Which I Fucking Forgot! SHIT! (breaths in and out) just calm down, goddammit can this get any worse right?

Y/n: I was fucking wrong!

behind y/n was a Banshee

Y/n: oh crap

y/n was stiff and couldn't move as the banshee moves closer because of one thing that y/n has.

He has a strange Erotic Sexual attraction for them.

why? Don't ask.

but then his dirty mind begins to flash images in his brain of the banshee and get's a hard on.

The Banshee is right in front of him and can feel his sexual tension, but instead of stabbing him she grabs him under the arms.

y/n saw her smirking face, and she opens her mouth and captures y/n mouth and using her tongue to explore y/n's mouth making him moan in pleasure.

Y/n: (Bloody hell how did she know?)

Y/n lost in pleasure gropes the banshee's cybernetic tits, the banshee Laughs as she let y/n breath and removed Y/n's clothing and Armor leaving him in his underwear.

the banshee puts y/n on a bench and giving him a blowjob.

Y/n: Oh god This feels wired but good!

he was getting close and the banshee was going faster.

Y/n: Oh shit!

Y/n came in her mouth, she drank every last drop.

but he was still hard, so she decides to let him dominate her.

Y/n took control and insert his member into her pussy.

they both moan in pleasure, as he begins to move slowly she locks her legs behind him.

he thrust a little bit faster and she even grab his head and make him sucking her tit.

y/n goes faster and he's getting close, she never let go meaning that he can cum inside of her.

for the last 4 Minutes they both came together.

Y/n was breathing from the pleasure, but then he heard voices.

???: Move in Kill any reaper forces you see!

??? Yes ma'am!

Oh crap it's some soldiers y/n checked his portal gun.

 it was now recharged.

But what about the banshee who was also breathing from pleasure?

so he made a dumb choice he's taking her with him back to his home.

he quickly gets redressed and opens the portal gun.

He grabs her hand and pulls her in with him.

MEANWHILE

A green portal opens and the two lands on the bed that somehow didn't break.

Y/n: Whoa talk about a close call Huh?

???: Indeed my love.

A new voice had y/n tense and saw the banshee who just...

Changed.

Y/n: Whoa that's new, you look younger and can talk.

Banshee: of course my love thanks to you you have saved me from death of those Asari commanders and gain me the ability to talk.

Y/n: So why did you not kill me when we first met

Banshee: It's because i can feel your love for me and you accepted me, and gave me untold pleasure that made me love you even more.

Y/n: Yeah thanks to my kinks.

Banshee: well thanks to you and your portal I have gain free will and I will become a goddess of the multiverse and I need a god with me, so will you join me?

Y/n was in thought about this choice, so without any regret.

Y/n: Sure begin god sounds fine.

Sil: Good boy and you can call me Sil, but first to become a god we must Bond.

Y/n: Oh okay so how do we do that?

Sil said nothing but unbuckled y/n's pants and grabbed y/n Member and inserted into her pussy.

Sil: (Moans) Now relax my love and Embrace Eternity!

the room has disappeared and replaced with galaxies around them.

Sil bounces on y/n up and down as he felt like nothing before.

Sil: How. do. you. feel. my. love?

Y/n was breathless from the pleasure.

Sil: (Giggles) i can tell.

She made y/n suck one of her tit and start thrusting.

Sil: yes fuck me my husband!

It went about 5 minutes later and y/n was getting close.

Y/n: sil I'm going to...

Sil: yes cum Cum! Make me pregnant!

Y/n and sil both came together and the world around them revert back to the bedroom.

Y/n: (breathing) holy shit!

Sil: indeed that was the most pleasuring bonding i ever had (yawns) but let us sleep.

Y/n: (yawns) yeah goodnight.

Sil: goodnight my love.

They fell asleep but unknown to y/n his body has some reaper cybernetics slowly growing on him.