The time is February and Valentine's day is around the corner. Koeda who dropped her heart hair clip by mistake runs into her ex-classmate Kiyodo again while she is looking for it ... !! Certain memories of her junior high school days which she wants to erase completely come back and unsettle Koeda. Then, to her surprise, Kiyodo tells her what she's least expected ... Is stormy weather coming to Koeda and Masamune's love?!