Hotaru and Hananoi-kun's plans to spend his birthday together fall through when Hotaru has a family event suddenly crop up. The thing is, even while she's with her family, she just can't stop thinking about him...
What makes people want 
to kiss in the first place?
ما الذي يجعل الناس يودون تقبيل بعضهم بالأساس؟
Woher weiß man denn,
wann man jemanden küssen will?
¿Qué hace que la gente quiera besarse?
¿Qué hace que la gente quiera besarse?
Je me demande à quel moment
on a envie d’échanger un baiser.
Che cos'è che spinge la gente a volersi baciare?
O que deixa as pessoas com vontade de beijar?
Почему людям вообще
хочется целоваться?