My Succubus System - Chapter 211:

A new member joins the adventuring team of a boy swordsman, a female priest, and a female ranger. The new member is a male wizard.As they go on adventures, their bond deepens and they become the best team ever.But Alvin, the boy swordsman, doesn’t know.What Alvin doesn’t know is that behind the scenes, the wizard Shinji, his beloved priestess Milis, and his best friend Renka, a female ranger, are having a physical relationship.The two of them have fallen into pleasure.Only Alvin doesn`t know.This is a netori story.There are scenes other than cuckolding.

Jiang Yu was a small mermaid who couldn’t sing. He had always felt inferior because of this. Not until he came to shore to find the father of his baby did he discovered that his talent turned out to be acting. Since then, he had trampled on the scum man, going on the acting road all the way, and progressing triumphantly.

Qin Shen: ??? You ran away after sleeping with me, and you still call me a scum man?

The not yet met Jiang Yu: Oh, it’s a small star who wants to hug my thighs.

The after contact Jiang Yu: Really fragrant.

Qin Shen found that things around him often disappeared, at first it was handkerchiefs, then ties, and then his shirt. And every time he lost something, there will be more pearls around him. One day, he caught all the things he had lost in that room, and he saw a little thief in his pajamas.

The little thief Jiang Yu is not happy, pointing at the jar of pearls, I am not a thief, I have money for you.

- Description from Novelupdates

Qin Mian opened his eyes and found himself lying in a leaky thatched room. The problem was that he was still in his family’s villa beforehand! What’s more, there was another man lying next to his leg in the quilt!

“You, you, who are you?”

The man sat up quietly, his upper body exposed as looked at Qin Mian for a moment before he carried a worn out bowl with a cracked corner from the low table at the head of the bed. The man said in a muffled voice, “Wife, drink water.”

Qin Mian’s eyes rolled backwards and he passed out.

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TN:
Title explanation: 勉为其男 [miǎn wéi qí nán] have the same sound as 勉为其难 [miǎn wéi qí nán] which means to do something reluctantly. 勉 [miǎn] is also part of MC’s name: Qin Mian.  Also, 其[qí ] sounds the same as 妻 [qi] means wife. So, there are words plays. Basically, Qin Mian reluctantly becomes someone’s man [wife] after he transmigrated.