A couple with a strong sense of smell, Mitsuki and Souta are plagued by their neighbor's foul odor. When Souichi, a man known for making his room unusually stinky after masturbating, refuses to address their complaints, they decide to confront him directly. However, things take a turn for the worse when Souichi locks them in his room and forces Mitsuki to endure an unwanted first kiss that leaves her mentally shattered. As she becomes increasingly aroused by the smell, she eventually accepts having sex with Souichi. Meanwhile, Souta returns home unexpectedly and catches Mitsuki deeply engaged in a passionate creampie session with Souichi.

潔癖で匂いに敏感なカップルの美兎とソウタは隣人の異臭に悩まされる。五味という男がオナニー後に部屋を異常に臭くするため、苦情を言いに行くが無視される。その後、五味の部屋に閉じ込められ、美兎は理想とはかけ離れたファーストキスを強要され、精神的に荒廃する。美兎は徐々に臭いに対して快感を覚え、五味とのセックスを受け入れてしまう。ソウタは再訪し、美兎が五味とラブラブ中出しセックスしているのを目撃してしまう。