Isshuukan Friends.(3888)

Other Title(s)一週間フレンズ。
One Week Friends
Genre(s)Comedy, School, Shounen, Slice of Life
SynopsisKaori Fujimiya is always alone because all of her happy memories, including time spent with her friends, disappear every Monday. Deciding that he wants to be friends with her anyway, Yuuki Hase tries to get close to Kaori each week, wishing that she would one day call him "a friend."