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. 
So you should be honest with yourself...
...لذا ينبغي أن تكون صادقاً مع نفسك
Sei also ehrlich zu dir selbst …
Así que haz caso a tu corazón.
Así que haz caso a tu corazón.
C’est pourquoi
je te conseille d’écouter ton cœur
Perciò,
Por isso, você precisa ser sincero
com o seu próprio coração...
Поэтому…