Housekeeping Mage from Another World: Making Your Adventures Feel Like Home! (Manga) Vol 1 by You Fuguruma

Alec, an A-rank adventurer, meets Shiori, a woman with the mysterious appellation “housekeeping mage.” She has so little magical power that she’s useless as a combat mage, but to make up for it, she uses her magic to take care of all the daily chores of an expedition, like washing and cooking, single-handedly.

As Alec adventures with Shiori, her novel use of magic provides a warm bath and delicious food...in other words, an environment much too comfortable to be called “camping”!

He’s completely taken with her, but she has a certain secret...