All of you had set off towards the castle of the Young Lord that Sango was at with her family, the place where she last saw Naraku. 

Along the way, you were comforting Sango, as she told you about what happened. 

(Y/N): I'm sorry about Kohaku. He must have been a good kid. 

Sango: He was such a sweet boy. 

(Y/N): Naraku won't get away with any of this. I swear on i- Huh? 

You saw a man stumbling about in pain. 

Man: Please ... help me ... 

He died right there, collapsing on the ground. From his back was a deadly wound. 

Blake: It looks like he died of extreme blood loss. 

Inuyasha: Not just him, I smell other peoples' blood! 

You all ran to find a village with tons of corpses strewn about! 

Sango: Too late, they're all dead. 

Kagome: How horrible. 

Miroku: And all of them from one blow. 

(Y/N): It looks like it came from a weapon. But who would be responsible for this? 

You then sensed someone nearby. 

(Y/N): THERE! 

Yang: I GOT HIM! 

Yang charged at the figure, only to get wrapped in a chain scythe! 

Yang: THE HELL?! 

The attacker was- 

Sango: NO! KOHAKU! 

Kohaku was the attacker. 

Ruby: Those are clothes similar to Sango's! 

Weiss: That means- 

(Y/N): HE'S SANGO'S LITTLE BROTHER! YANG DON'T HURT HIM! 

Yang: HOW CAN I, WHEN HE'S GOT ME TIED UP!! 

Sango rushed towards her brother. 

Sango: KIRARA! 

Kirara transformed as Sango got on top of her. 

Kohaku started to run as Kagome saw- 

Kagome: He's got a Shikon shard inside of him! 

(Y/N): Oh you got to be kidding me! SANGO WAIT! 

Everyone went in pursuit. 

Inuyasha: Why now of all times?! 

Sango caught up to her brother! 

Sango: Kohaku, it's really you. 

???: Hello Sango. 

Behind him came Naraku. 

Sango: GRRR! NARAKU! 

Back with you guys... 

You all kept up the pace. 

(Y/N): I SHOULD HAVE KNOWN NARAKU WOULD DO SOMETHING LIKE THIS! 

Blake: This means the Shikon Jewel shard is what he's using to control Sango's brother. 

(Y/N): Yeah! Sango is in grave danger! 

Back with Sango... 

Naraku: You should be thanking me Sango. 

Sango: WHAT?! WHY SHOULD I THANK YOU, YOU BASTARD?! 

Naraku: Because I have extended your brother's life. At the time that Kohaku's life should have come to an end, I gave him this. 

He showed a Shikon Jewel shard. 

Sango: You revived him through a Shikon Jewel shard? 

Naraku: Yes, if you take out the shard inserted in his body, he will die on the spot. Understand that Sango? Kohaku's life is in your hands. If you want to save your brother, then I want you to take the Tessaiga and give it to me. 

Sango: LIKE HELL! 

She tried to use Hiraikotsu, but Kohaku took out his chain scythe and pointed it to her. 

Sango: Kohaku, it's me! Your big sister! 

Naraku: Don't even bother. He has forgotten about you and everything that happened before he woke up. Right now, he is my servant. 

Sango: YOU BASTARD! 

Naraku: HAHAHAHAHAHAHAHAHA! I'll be waiting Sango. 

He and Kohaku both disappeared. 

And so... 

Sango returned to the gang. 

(Y/N): Sango! 

Ruby: That was your brother was h- 

Sango: No. It wasn't. 

Kagome: Sango, are you- 

Sango: Yes, I'm sure of it. Miroku. 

Miroku: Y-Yes? 

Sango: Do you think you can hold a service for the murdered villagers? 

Miroku: Uh ... sure. 

Later...

You all noticed Sango was being distant. 

(Y/N): Sango. You're lying aren't you? That definitely was Kohaku. Why else would you act like that? Guys. Just leave Sango be. She's going through a lot. 

Inuyasha: You being a freaking softie (Y/N). I really can't stand that about you. I say we beat the information out of her until- AGH!

You punched Inuyasha in the face. 

(Y/N): Not in the mood for your shit, Mutt! 

That night... 

Everyone was fast asleep, though Sango noticed that Inuyasha had Tessaiga close to him. 

She got closer to the blade. 

Sango: I want to bring Kohaku back, but- 

She reached out for it, and Inuyasha got up. 

Inuyasha: So, do you feel like talking yet? 

Sango: I-Inuyasha. 

Inuyasha: It's about your brother, right? What happened between you two? 

Sango: N-Nothing. Kohaku would never kill an innocent person. That thing wasn't my brother. 

Inuyasha: No matter how much he's changed, he's still your brother, Sango. He shouldn't be able to forget or hate you so easily. 

Sango: What would you understand about it? 

(Y/N): You two can talk later. 

Inuyasha and Sango: Huh? 

(Y/N): I sense demons already. 

A whole bunch of demons appeared outside with Kohaku amongst them. 

Sango: K-Kohaku! 

Inuyasha: GET OUT OF HERE YOU WIMPS! 

Inuyasha unsheathed Tessaiga and started to cut up the demons in his path! 

But then Kohaku attacked with his chain scythe! 

Inuyasha: Don't think you can fight against me! 

(Y/N): Inuyasha! Don't kill him! 

Inuyasha: I know! I'll just wake him up! 

But suddenly you both saw Kohaku injure himself. 

(Y/N:) The hell?! 

He pulled out the Shikon Jewel shard. 

(Y/N): He pulled out the shard? 

Sango: Kohaku's life is bound to the shard inserted into his body. If it's taken out, he will die on the spot! 

Sango used Hiraikotsu to bring Tessaiga over to him! 

(Y/N): SANGO, WHAT ARE YOU DOING?! 

Kohaku took off on the demons at that moment. 

Sango: I'm sorry. KIRARA! 

Kirara transformed and Sango got on, taking Tessaiga with her! 

Inuyasha: HEY! SANGO, WHY ARE- 

Sango: (crying) I'm ... sorry. 

(Y/N): I know you did it Naraku. I will kill you for this, no matter what happens, you die tonight! 

Soon... 

Sango appeared before Naraku. 

Sango: I have it. 

Naraku appeared. 

Naraku: So, you betrayed your own friends for your brother huh? Are you going to hand it over to me? 

She approached him. 

Naraku: Wait. Drop Hiraikotsu. 

She dropped her weapon. 

Sango: Bring Kohaku out. 

Naraku: Don't worry, he's waiting for you. Now give me Tessaiga. 

But as she went to him a blade came from her arm! 

Sango: DIE NARAKU! 

But he stabbed her. 

Sango: AAAAAAAARGH! BLEGH! 

She coughed up blood and soon poison entered her body. 

Naraku smirked as he revealed his face to her. 

Sango: You ... you're the master of the castle. 

Naraku: Yes, I took the original's place. It was the perfect way to recover after what (Y/N) did to me. 

Sango: Then who was- 

Naraku: That was a dummy that I created to take my place. 

Sango: K-Kirara. 

Kirara roared and attacked Naraku, but Naraku's insects appeared and poisoned her, turning her back into small form. 

Sango: Ki ... ra ... ra. 

Naraku: HAHAHAHAHAHAHAHAHAHAHA! Foolish animal. But, you've done well Sango. And now, Kohaku, kill her!