* Yaoi * Cheating

Kou and his lover Ao have been together for years, but that doesn't stop Kou from cheating on his lover whenever he's had a bit too much to drink. After an one-night stand, Kous starts an affair with the guy, even though he already has Ao. Kou's indecision not only hurts Ao, but also his affair.

First couple - It was "just" a kiss, but netherthless this can be considered as cheating, too

Second story (ch 4-6) includes cheating, The couple does not cheat on each other, but the uke had an affair with a married man before.

Same as "Amaeru Kubiwa". The couple does not cheat on each other, but the uke slept with a married man before their relationship.

Ex-girlfriend cheated - ch2

Uke cheated

Not quite sure if (ex-)boyfriend was a cheater. Just rumors maybe?

Seme is pretty promiscuous (many girlfriends at the same time) before getting into a relationship with his best friend

Ex-boyfriend in the first story