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.
That's why I'm teaching those guys
لهذا السبب أعلم أولئك الرجال
Deshalb zeige ich ihnen,
Por eso les enseño que es matar o morir.
Por eso os enseño que es matar o morir.
C’est le message 
que j’ai donné à ces types.
E a chiunque ci proverà...
insegnerò che o uccidi o vieni ucciso.
Por isso eu estou ensinando esses caras