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

"I can't do this!" Yuke Feldio, a Red Mage, has left his A-rank party of five years to become an adventurer, and has finally run out of patience with his new life. And so begins a desperate life of joblessness... However, Yuke is then welcomed into a party of former students, all of whom are girls! And as he conquers dungeons, Yuke's abilities are revealed one after another. In fact, the magic and skills that he wields have a power that is beyond the norm-?