Shishunki Bitter Change

Shishunki Bitter Change, written and illustrated by Masayoshi, began serialization in 2013 within the pages of Earth Star Entertainment's Comic Earth Star. The series explores the body-swap trope through the lens of early adolescence, focusing on two protagonists who undergo a permanent gender-swap transformation. It emerged during a period of rising interest in manga that blended psychological drama with supernatural premise, distinguishing itself by focusing heavily on the social, emotional, and identity-related consequences of the protagonists' new lives rather than comedic relief.

Masayoshi's design approach leans into a grounded, character-driven aesthetic that emphasizes the internal turmoil and evolving relationships of the two leads. The narrative was received as a sensitive examination of gender identity and the complexities of growing up, earning a dedicated readership for its deliberate pacing and character development. Throughout its run, the series remained a notable title in the publisher's lineup for its consistent exploration of how the physical self intersects with one's established personal history.