Seibetsu "Mona Lisa" no Kimi e.  

性別「モナリザ」の君へ。, To the "Mona Lisa" gendered you., 致性别为蒙娜丽莎的你, À l'image de Mona Lisa..., The Gender of Mona Lisa, Płeć Mona Lisy, Just Like Mona Lisa

At twelve years old, humans' bodies undergo gradual changes towards the gender identity they prefer. By fourteen, these physical transformations become more pronounced, aligning with one's chosen gender. However, despite reaching eighteen, you have yet to identify your gender.

Seibetsu "Mona Lisa" no Kimi e. has been published digitally in English as The Gender of Mona Lisa by Square Enix through Manga UP!