The Yuzuki family's four brothers cherish each other deeply. Among them, the second son, Mikoto, dotes on Minato, the third son, while Minato, in turn, adores Gakuto, the youngest. 
He must have spent all his 
energy taking care of Gakuto.
Das kommt davon, dass er sich
für Gakuto komplett verausgabt.
Es porque gasta toda su energía
con Gakuto.
Il a dépensé toute son énergie
à s’occuper de Gakuto.
Ha consumato tutte le sue energie per Gakuto.
Ele deve ter gastado toda
a energia cuidando do Gakuto.
Он тратит все силы на Гакуто.