Mimoza Yakata de Tsukamaete  

Mimosakan de Tsukamaete, ミモザ館でつかまえて

The main character in this story, named Haruka, is a new teacher at a secondary school who decides to stay at Mimosa Pension. The owner of the pension, Areira, offers her a low rental rate on one condition - that she helps prepare dinner every evening. Despite being surprised, Haruka agrees to the arrangement. However, she's taken aback when she discovers that Areira is actually one of her students in class the next day.