Rakka Ryūsui (落花流水) is a Japanese 4koma manga written and illustrated by Ikki Sanada. The series began its serialization in Manga Time Kirara Max in 2006. The main character is Akiho Hayama, and the story is about her comedic days at the kyūdō club at Sakuraba Girls' High School (桜庭女子高校, Sakurabajoshikōkō), an all-girls school. The series ended on February 19, 2015 with a final 9th volume release on the March 27, 2015.