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…
But there's no name on this...
Aber auf dem Brief steht gar kein Name.
Könnte ein Streich sein.
Pero no tiene nombre…
Podría ser una broma.
Pero no tiene nombre…
Podría ser una broma.
En même temps, y aucun nom dessus.
C’est peut-être une farce…
Ma qui... non c'è scritto il mittente...
Mas nem tem remetente... 
Deve ser alguma pegadinha.
Вот только оно не подписано... 
Наверное, пошутили.