Tonde Hi ni Iru

In the bustling city of Tokyo, a high school student named Kenji is struggling to find his place in the world. With a rare condition that causes him to turn into a being made of pure light when he's happy, Kenji's life is turned upside down as he navigates the complexities of adolescence. His condition, known as "Sunny Smile Syndrome," makes him an outcast among his peers, and he must learn to control his emotions in order to avoid transforming into a being of pure light. As Kenji tries to find a sense of belonging, he becomes entangled in a web of relationships with his classmates, who are both fascinated and intimidated by his condition. With the help of his friends, Kenji must learn to accept himself for who he is and find a way to live a normal life despite his extraordinary abilities. But as he delves deeper into the mysteries of his condition, Kenji begins to realize that his Sunny Smile Syndrome may hold the key to unlocking the secrets of the universe itself. Tonde Hi ni Iru is a Manga originally published in.