Basically you were at the final battle as another solver user- you were going to help Uzi, V and N fight J and CYN but in the end you were standing against CYN alone with J somewhere un concious and the rest to far away to help- so what did you do? You swallowed CYN's heart which killed her but then soon you realised you became a vessle but because you had the cure inside you the solver couldnt control you and couldnt control others...but...your solver tail? Yeah the eye's are yellow now which means the Solver can talk to you through the tail...right now you were in class when suddenly Cyn (As your tail) pops out and says

"Hmm...lets ditch this class...Im learning nothing"