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.
Sho, I'd thought about letting you inherit
the world I was going to take over,
شو، لقد فكّرتُ في أن أورثك العالمَ الذي كنتُ
سأسيطر عليه
Sho, pensaba dejarte en herencia
el mundo una vez lo controlara,
Sho, pensaba dejarte en herencia
el mundo una vez lo controlara,
Shô…
Sho, avevo considerato di lasciarti in eredità 
il mondo che avrei conquistato,
Sho, eu pensei em deixar você 
herdar o mundo que eu dominasse,
Сё...