To pursue missed chances at love and success, 31-year-old Chikage Deguchi takes an experimental drug that changes her appearance back to how she looked at age 15. Chikage tells Tokita she s decided to date the teenage Ru as her 15-year-old self, and Tokita wonders how things might have been different if he had confessed his feelings for her back in high school.

First published in Japan in 2015 by Hakusensha, Inc., Tokyo. Reads from right to left.