I Left My A-Rank Party to Help My Former Students Reach the Dungeon Depths!

"I can't do this anymore!" Yuke Feldio, a red mage, just left his adventurer A-Rank party. After being mistreated as a handyman and ridiculed for five years, he finally snapped! And so began his desolate, unemployed life... or so he thought! Through a stroke of luck, Yuke is welcomed into an all-fem...