A young man wants to marry the mothers of the hero's party—

As a member of the hero's party Ceres, the main character, set out to defeat the demon king.
But one day, he was suddenly dismissed by the hero, and he had to leave the party.
All alone, Ceres sought to find a domestic slave to take care of him. What he saw at the slave market was Ms Shizuko, the mother of the hero, sold as a slave—??

The unreasonably expelled young man's Isekai mama harem is born!!

Kasai Rena is a hard-working office girl with a peculiar interest she hides from everyone...

From MangaHelpers:
One day, high schooler Nishiura Kenichi was tasked to check if his classmate, Kurama Shion, was still alive. Shion has not shown up to her classes in the past two months, and the teachers were getting worried. When Kenichi arrives at her place, she decides that he would make a good test subject for her recently acquired black magic powers. With her black magic curse, she turns Kenichi into her personal slave.

One day while studying, Ikenouchi Jinta gets crashed in upon, literally, by a girl wearing magic boots who fell through his roof! However, these magic boots have one slight problem with them...