Shuuchaku Voice

It is the wedding day of the man he has had a crush on since his school days. The sight of the marriage makes Arima Kou sick, and he is taken care of by Akiomi, a dentist who introduces himself as the man's cousin, who looks like the man himself. Kou thought he could forget the man by going out with the kind and gentlemanly Akiomi. However, Akiomi's kindness is all a ploy to win Kou's heart..! When Akiomi threatens Kou with a video of them having sex, he is trapped with no escape...

(Source: Hanaoto, translated)

Note: Includes extra chapters.