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...
Having an older loli for a childhood 
friend makes him guilty!
!امتلاكه للولي أكبر كصديقة طفولته يجعله مذنبًا
Eine Loli-neechan-Kindheitsfreundin! Guilty!
Il joue de leur amitié d’enfance !
Il est coupable !
Avere come amica d'infanzia
una lolita più grande lo rende guilty!
Ter uma loli mais velha como
amiga de infância o torna culpado!
У него подруга детства
выглядит как лоли!