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 that doesn't make it any less vital.
مُشاركتي قوّتي لم ينقصها بتاتاً
Aber das ändert nichts daran,
dass es wertvolle Energie ist.
Aun así, sigue siendo importante.
Aun así, sigue siendo importante.
Mais cela ne change rien au fait
qu’elle est cruciale.
Questo non significa però 
che essa non mi sia indispensabile.
Isso não a torna menos vital.
но это совершено не
уменьшает её ценности.