Over the course of the summer until her graduation, with changes she can't control but also being protected by the mochi which looks over important times, Yuna, a 15-year old student begins to change so that she will not forget.
1990
1999
1962
2005
1998
2001
2002
1968
2000
1987
1957
1986
2024
2008
1985
2021
2003