Wash It All Away manga volume 6 features story and art by Mitsuru Hattori.

Wakana reflects on her past two years in Atami, while Kyusho prepares to leave for a part-time holiday job in Tokyo. She then celebrates Christmas with her friends in a surprise party, and Nairo makes a social-media video of her to mark the new year. The video catches the eye of a young girl who requests the cleaning of a ribbon, but is Wakana supposed to know this girl from her past?