Café au Lait Amame de Onegaishimasu.

Runo is a first-year high school girl who is feeling gloomy and hoping for a pick-me-up. She casually enters a coffee shop where she meets a gorgeous waiter who looks he came straight out of a shoujo manga. He defended her when her classmates teased her about the manga she was drawing, and invited her into the cafe when she was caught outside in the rain… Runo finds herself increasingly attracted to the older boy who has supported her time and again…? A slightly grown-up age-gap love story. (Source: Betsucomi, translated)