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 won't let you go any further! 
Those are the president's orders!
!لن أدعك تتقدّم أكثر! هذه أوامر الرّئيس
Ich lasse dich nicht vorbei!
Das hat der Chef angeordnet!
¡No te dejaré pasar!
¡No te dejaré pasar!
Je te laisserai pas avancer !
Ordre du directeur !
Non posso permetterti di andare oltre!
Ordini del Presidente!
Eu não vou deixar seguir em 
frente! São ordens do presidente!
Дальше я тебя не пропущу!