Arata, once and for all, tries to make the dense-as-can-be Kazuomi realize what he has in his hands.
As long as he puts his heart into it, 
it really doesn't matter.
.لا يهمّ طالما يقول ذلك من قلبه
Solange die Gefühle aufrichtig sind,
ist das unwichtig.
Tant que le cœur y est,
peu importe.
Se è piena di sentimento
mi va bene in qualsiasi modo.
Desde que os sentimentos sejam
 verdadeiros, não importa.
Пока он вкладывает в это душу,
остальное неважно.