Having inherited BB's wishes, Seigi takes Wiseman's advice and lies low in a mountain hideout for a year. Izzy and Tom have spent the year with him, along with Tamaki, who joined them on the mountain, and Seigi has finally grown strong enough to overpower Izzy. Then one day, a mysterious enemy attacks their hideout, leaving behind a video letter with footage of Arya in America, near the location of the third ruins.
I've had you grow stronger 
over this past year
جعلتك تصبح أقوى السنة الماضية
Der Grund, warum ich dich
ein Jahr lang trainieren ließ,
En este año hice
que te volvieras más fuerte
En este año hice
que te volvieras más fuerte
Je t’ai demandé 
de devenir plus fort
In quest'ultimo anno ti ho reso più forte
Você ficou mais forte nesse último ano