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.
But you are, though. Look at
how much damage you've done to the city.
لكنّكم كذلك. انظر إلى حجم الأضرار
الذي ألحقتموه بالمدينة
Die seid ihr doch auch, wenn ihr
so viel Schaden in der Stadt anrichtet.
Es que lo son.
Es que lo sois.
Parce que vous l’êtes, peut-être ?
Vous avez détruit la ville.
Perché lo siete. 
Guardate quanti danni avete fatto all'intera città.
Mas vocês são. Olha o 
que fizeram com a cidade.
Вы и есть злодеи.