Natsuki has been acting strange and seems to have his head in the clouds through everything he does. After being interrogated by Minamo and the others, he reluctantly confesses to them that he kissed Atri in the ocean. 
And why does being useful make you happy?
ولماذا كونكِ نافعة يُسعدكِ؟
Und was genau macht dich glücklich,
wenn du mir nützlich bist?
¿Y por qué te alegra serme útil?
¿Y por qué te alegra serme útil?
Et pourquoi
est-ce que ça te rend heureuse ?
Per quale motivo essere utile ti rende felice?
E por que ser útil te faz ficar feliz?
Почему рада чувствовать себя полезной?