Feeling that things cannot continue this way, Naho resolves to rekindle Shogo’s interest—but her efforts only backfire. Meanwhile, Shogo is approached by his coworker Asano Ayaka, who tempts him with an affair, saying, “Won’t you be my friends-with-benefits?” Little by little, his emotions begin to waver. On the other hand, Naho, also struggling with a growing sense of emptiness, runs into her high school ex-boyfriend, Shirakawa Toru, by chance, and begins seeking comfort in his unchanged kindness.

A husband’s “betrayal,” a lover’s “ambition,” and an ex-boyfriend’s “devotion.” A “secret relationship” involving four men and women becomes intricately entangled, and the couple’s everyday life, after crossing the line, transforms into an unpredictable psychological battle.

(Source: Japanese = TV Tokyo || Translation = MyDramaList)

~~ Adapted from the web manga series "Kono Ai wa Machigai desu ka: Furin no Shokuzai" (この愛は間違いですか～不倫の贖罪) written by Otoha Ichika (乙葉一華) and illustrated by Hisamatsu Yunomi (久松ゆのみ).