Housekeeping Mage from Another World: Making Your Adventures Feel Like Home! (Manga) Vol 6 by You Fuguruma

Shiori and Alec successfully guide their client, the artist Annelie, to the top of Silveria Tower. Their arrival allows Annelie to accomplish her true goal: bringing her lover, Dennis, to the pinnacle of the tower, so she can confess her long-held love for him. However, in the shadow of their blooming romance, danger lurks, and the journey home will prove more challenging than any of them imagined...