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.
I've been too scared to think about it
so I've been running away...
،كنتُ خائفاً جدّاً حتّى من التّفكير في الأمر
...لذلك كنتُ أتهرّب
Evitaba pensar en ello por miedo,
Evitaba pensar en ello por miedo,
J’évitais de trop réfléchir
à la question,
Ho sempre avuto troppa paura per rifletterci davvero, 
perciò sono sempre scappato...
Eu fiquei com medo de pensar, 
e por isso estou fugindo...
Я боялся душевных
терзаний и избегал их,