Yuuhi learns of the reason Samidare wishes to destroy the Earth, and he continues to train himself every day in order to hone his new powers. However, the "discipline" Yuuhi received from his grandfather continues to bind him like cursed chains.

During that time, Yuuhi receives word from his home that his grandfather has fallen ill and been hospitalized—
I'll need to seriously hone my body 
or I won't be able to keep up.
يجب عليّ أن أصقل جسدي حقّاً
وإلّا لن أتمكّن من المواصلة
Wenn ich meinen Körper nicht
so richtig durchtrainiere,
Si no entreno el cuerpo,
no voy a servir de mucho.
Como no entrene mi cuerpo,
no voy a servir de mucho.
Je dois m’entraîner à fond,
sans quoi j’arriverai pas à suivre.
Se non aumento radicalmente le mie prestazioni fisiche,
 non riuscirò mai a stare al suo passo.
Preciso muito me fortalecer,
ou não vou conseguir acompanhar.
Надо как следует заняться собой,
а то в жизни за ней не поспею.