Motokano to no Jirettai Gisou Kekkon

"Ugh, why do I have to be married to you?" "That's my line." Bound by the circumstances of the Isurugi family, Haru is forced into a political marriage with Tamaki Rio—his childhood friend and former girlfriend. Now living together under one roof, they maintain a cold, purely formal arrangement meant to satisfy their obligations. However, beneath this carefully constructed facade, neither has truly moved on from their past relationship. As they share their daily lives, both struggle desperately to conceal their lingering emotions. Rio finds her heart racing whenever Haru gets too close, terrified that her unresolved feelings will surface. Meanwhile, Haru works tirelessly to hide the fact that she still holds immense sway over his heart. Both pretend to be completely indifferent, yet their constant proximity only deepens their awareness of one another. What begins as a hollow contract slowly transforms as the affection between the former couple gradually reignites. Their frustrating attempts to maintain distance only draw them closer, weaving an irresistibly tense romantic comedy about two ex-lovers navigating the delicate boundaries of a fake marriage.