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. 
D-discipline?
Hä? Was für welche?
¿Eh? ¿Entrenar qué?
Hein ? De quoi tu parles ?
Eh? Di che addestramento parli?
D-Disciplina?
Что? В чём?