性別「モナリザ」の君へ。[Seibetsu "Mona Lisa" no Kimi e]

In this 2018–2022 Japanese comic from Square Enix, a young man discovers that the woman he loves is actually a gender-fluid individual who can change their sex at will. The series explores themes of identity and acceptance through a unique, romantic lens, blending heartfelt drama with speculative elements. Written and illustrated by a single creator, this 10-issue run is notable for its sensitive, nuanced portrayal of gender fluidity within a manga format.