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'll find it using the color it's dyed in and watch it grow
سأجدها باستخدام اللّون الذي صُبِغَتْ به
وأراقبها تنمو
Ich folge seiner Farbe, will ich ihn doch behüten.
Vou encontrá-la usando a cor que 
fora tingida e vê-la crescer