
Volume 3, final chapter - 15
After this, we need to wait for the next volume (still not published).
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A girl (omega) tried to make Jasper bite her neck by request of his mother, luckily Jasper friend (alpha) was able to stop it.
Everyone goes to the infirmary. They make a plan to fool Jasper's mother. The girl and Jasper'll act as if the mother's plan succeeded and act like lovers. Everyone talks trash about Taisei and praise Jasper new relationship.
The girl confronts Taisei, telling him she fell in love, she asks Taisei to break up with him and he refuses. Then, she somehow fell the stairs (Taise doesn't know how it happened), everyone comes and point fingers at him, making him distressed. Jasper wants to defend him, but if he does the plan'll fail. So he looks at Taisei and just like everyone else, he asks "Did you push her?".
Taisei says no, but no one believes him and them he runs away, the last page shows his hand turning into bubbles.
My speculation:
Maybe thanks to the mental stress he's going through, he'll slowly dissappear and go back to his world.

I understand why blondie is so hostile towards her, but damn, the girl just went through a nightmare situation, no need to be a jerk. Why are you intimidating someone that's obviously in no position to defend themselves? Even Anastasia already forgave her and mended their relationship, what right do you have to invalidate their friendship?
Oh yeah, he just so happen to find a woman with white hair and red eyes just like his own.