Harada Kusuko, a high school student harboring a secret crush on the class heartthrob, Mishima Takeshi, gets the surprise of her life when Mishima invites her to accompany him on a school trip to Kyoto following a breakup with his girlfriend. Little does she know, Mishima's heart is still entangled with Shouko, his former teacher from middle school. Despite the complications of their relationship due to age and societal norms, Mishima remains fixated on Shouko, whose own marriage is crumbling. Kotaro, Mishima's steadfast companion, disapproves of his friend's attachment to Shouko, leading to escalating emotional conflicts. Mishima's entanglements lead to violent altercations with peers, culminating in his expulsion from school. Ridden with guilt, Mishima ends his relationship with Kusuko and disappears from her life. Amidst the chaos, the question lingers: can genuine love prevail against all odds?