Junichi finds a love letter in his shoe box after school, but feels compelled to properly turn the girl down, as he already has a girlfriend. As it turns out, there’s another gal waiting for him who starts to get hot and heavy with him. Only for Yukana to show up at the worst possible moment…
Isn't your heart beating
way too loud right now?
Sag mal, geht dir dein Herzklopfen
nicht ein wenig auf den Sack?
¿No te late el corazón
demasiado fuerte ahora mismo?
¿No te late el corazón
demasiado alto ahora mismo?
Ton cœur bat tellement fort
qu’il me casse les oreilles.
Di'... non ti sembra che i battiti del tuo cuore
abbiano un volume eccessivo?
Não acha que seu coração 
está batendo muito forte?
Твоё сердце ведь забилось чаще?