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 tried being courageous for once, President.
حاولتُ أن أتحلّى بشجاعة ولو لمرّة يا رئيس
Ich habe ausnahmsweise meinen Mut
zusammengenommen, Chef!
Yo también decidí
armarme de valor, presidente.
Yo también decidí
armarme de valor, presidente.
Je vais tenter de prendre
mon courage à deux mains, monsieur.
Per una volta ho cercato
di essere coraggioso, Presidente.
Eu tentei encará-lo com 
coragem uma vez, Presidente.
На этот раз я тоже решил
проявить смелость, директор.