A Farewell Party for a Scumbag Manga
Sasen de Sumu to Omou na yo ~Kuzu Otoko no Soubetsukai~ / A Farewell Party for a Scumbag / 左遷ですむと思うなよ~クズ男の送別会~ / Sasen de Sumu to Omou na yo ~Kuzu Otoko no Soubetsukai~

Amamichi Mei, an office worker who worries about others’ opinions, secretly dates Isshiki Shunto, the popular star of the Sales Department. When Shunto says something that sounds like a marriage proposal, Mei feels happier than ever—until she catches him cheating with a woman from another department. Heartbroken, Mei tries to move on and make a fresh start. Instead, Shunto begins harassing her after their breakup. When she reaches her limit, Mei decides she will no longer put up with his behavior and sets out to punish the scumbag who looks down on women.