Kanon

Yuichi Aizawa, a second-year high school student, returns to a city he spent time in seven years before — long enough ago that almost everything about it has slipped from his memory. He moves in with his first cousin Nayuki Minase and her mother Akiko. Nayuki tries repeatedly to help him remember what the two of them shared back then, without success. As Yuichi spends time in the city and begins to understand the quiet supernatural currents running through it, things from seven years ago start coming back. The story is set beginning January 6, 1999.