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…
You're getting so excited
over a girl other than your girlfriend.
Du wirst schon so geil bei ’nem Mädel,
das nicht mal deine Freundin ist.
Te excitas demasiado
con una chica que no es tu novia.
Te excitas demasiado
con una chica que no es tu novia.
Il bat la chamade pour moi,
alors que je suis pas ta copine…
Non sono la tua ragazza,
ma hai comunque il cuore che pompa a mille.
Fica excitado assim com uma garota 
que nem é a sua namorada...
Так возбудился перед кем-то,
кроме своей девушки. Плохой мальчик.