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.
Stop. Don't act like you know how I feel.
توقّف. لا تدّعِ أنّك تفهم مشاعري
Hör auf! Tu nicht so als
könntest du das nachvollziehen!
¡Basta! ¡Tú no sabes nada!
¡Basta! ¡Tú no sabes nada!
Arrête !
Fais pas comme si tu me comprenais !
Piantala, non fare finta di capire come mi sento!
Pare! Não finja que entende o que eu sinto.
Прекрати! Не притворяйся,
будто понимаешь!