Yamada-san is good at cuckolding (v1.01) by PlumSoftware

Yamada Rikka is a bright and cheerful gal. And her boyfriend, Morisaki Shirou, loves her dearly. But their love is so deep that it leads them to take a step towards "twisted desire." Forcing her to sleep with other men – Morisaki trembles with a sense of guilt and jealousy, but he finds himself drowning in an irresistible excitement. Rikka, succumbing to pleasure. Morisaki is tormented by jealousy and guilt. And sometimes, alone, they lustfully confirm their love for each other at night. A school romance story entangled with immorality, jealousy, and lust. Can you accept this ending...?​

2D,Gal, Cheating/Adultery, Corruption, School, Pure Love, Cuckoldary (Netorare), Cuckoldary (Netorase), Love Comedy/RomCom, Dilf, Big tits, Groping, Handjob, Blowjob, X ray, Male Protagnist, Japanese Game, Multiple endings, Censored, Cowgirl, Doggy style

1. Extract and run.

v1.01
・Fixed reported bugs
・Corrected Typos in files