Seibetsu "Mona Lisa" no Kimi e.

Chapter 20: An Unforgettable Love
Chapter 19: Girl Meets Boy
Chapter 21: Fissure
Chapter 19: Girl Meets Boy
Chapter 21: Fissure
In this world, when human beings reach the age of 12, their bodies gradually change to the genders they wish to be. And by the time they are 14 years old, their appearances change to reflect their genders. But by spring of my eighteenth year, I am still without a gender...