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...?
Strike shot, Dark Thunder Keraunos!
¡Disparo directo, Dark Thunder Keraunos!
Strike Shot, Dark Thunder Keraunos !
Tiro de ataque,
Keraunos de Trovão Negro!