In the winter of his first year in high school, Maru Sueharu fell in love with Kachi Shirokusa, a genius novelist who happens to be his classmate. But since it was his first love, time only continued to pass by while he could do nothing. As his so-called friend Tetsuhiko chides him and his childhood friend Shida Kuroha teases him, he overhears his crush Shirokusa saying she has a boyfriend now. His heart broken before he could even confess his feelings, Sueharu is devastated. Then Kuroha proposes that they get revenge...
So even if you get revenge, 
you'll only feel empty.
.لذا حتّى إن أخذت انتقامك، ستشعر بالفراغ
Nach so einer Rache würdest du
dich bloß leer fühlen.
Aunque te vengues, te sentirás vacío.
Aunque te vengues, te sentirás vacío.
Ça ne comblera pas
le vide dans ton cœur.
Così, anche vendicandoti, 
ti sentiresti vuoto e basta.
Se cumprir assim sua vingança,
vai se sentir vazio.
Даже если ты отомстишь,
в душе будет лишь пустота.