Himawari is spending time helping Chinatsu with her Valentine day gift, but Sakurako feels like a pain when Himawari is not around checking her homework.
That doesn't even have anything 
to do with Valentine's Day.
No tiene nada que ver con 
el Día de San Valentín.
Eso no tiene nada que ver con el Día de San Valentín.
Isso aí não tem nada a ver
 com o Dia dos Namorados.