Ren's vowed to bring out Ryoma's potential, but is once again pushed back by an enemy stronger than Sakura—Dark Usurper Zeus. 
With even Kamui and Napoleon struggling, Ren remembers words Akira has spoken in the past. 
And then...?
I've been slinging at full power,
Die ganze Zeit lang habe ich
mit aller Kraft an den Monstern gezogen,
He estado lanzando
con toda mi fuerza,
Al atacar, usaba toda mi fuerza
Je commence à pleine puissance,
Tenho atirado na potência máxima,