Nishina Shiho, is a young mother and raises her child while working as a writer at home. Although she enjoys her life and has a perfect husband, she is troubled by her lack of sex with her husband, Kosuke, who has ED. Due to this, Kosuke suggests that they attend a "couple exchange party", where couples change their partners for various reasons.

Aimi Satsukawa
Nishina Shiho

Kento Senga
Nishina Kosuke

Manami Hashimoto
Morio Yuko

Yurina Yanagi
Ando Chiharu

Masanari Wada
Ando Yuki

Maho Nonami
Kosaka Yoshie

Yuma Ishigaki
Kosaka Tsuyoshi

Yuka Itaya
Kubozuka Shoko

Yuta Hiraoka
Kubozuka Yoichiro
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Hirugao: Love Affairs in the Afternoon64%
Life: Love on the Line64%
Yosuga no Sora68%
Tales of Wedding Rings73%
Meet Me After School73%
7th Time Loop: The Villainess Enjoys a Carefree Life Married to Her Worst Enemy!78%
School Days64%
The Fragrant Flower Blooms with Dignity86%
Burn the House Down71%
My Happy Marriage83%
Nina the Starry Bride84%
My Personal Weatherman79%
X73%
A Sign of Affection81%
Basilisk74%
My Husband Won't Fit62%
The Fruit of Grisaia67%
Aoi Bungaku Series68%
Bibliophile Princess69%