Senpai doesn’t have any confidence that he can win against the art club president. Nagatoro and the gang try to cheer him up, but the president’s art is just too powerful. Nagatoro offers to model for Senpai.
If you don't care to take 
the art club seriously...
...إذا لم تتّخذ نادي الرّسم بجدّية
Wenn du den Kunstklub
nicht ernst nimmst, …
Si no te interesa ser del club de arte,
Si no te interesa ser del club de arte,
Si tu ne fais plus aucune
activité décente…
Visto che non prendi sul serio il club di arte,
Se você não quer mais
levar o clube a sério...
Раз уж для тебя это всё несерьёзно...