Three years ago, Serizawa was troubled with about his psychic powers. One day, he was visited by the boss, Suzuki Toichiro. Serizawa ends up trusting him since he's the first person to understand what he's going through. But Mob then brings up the fact that Serizawa is being used and tells him, "I'll be your friend." Hearing Mob say that, Serizawa... 

Meanwhile, after defeating Sho, the boss starts gathering up the energy he was sharing with his followers and turns into an energy monster.
He finally found someone
 who understood him.
أخيراً وجدَ شخصاً قد فَهِمَه
Endlich versteht ihn jemand.
Er kann sich nur daran klammern.
Era el único que lo entendía.
Era el único que lo entendía.
Quelqu’un l’a enfin compris,
il ne peut que s’y accrocher.
E quando ha trovato qualcuno che lo capiva, 
non ha potuto fare altro che seguirlo.
Ele finalmente encontrou 
alguém que o entende.
Вот и цепляется за компанию,