Yet_Another_Dragon
It has been years since Piranin and his schoolmates graduated and went their separate ways. Piranin, unlike the others, remained in the town his former school resides in. He's a teenager now, and lives in a nearby lake, becoming a local legend, but, growing increasingly lonely, uses some clothing left behind by those who went to the lake to disguise himself as a human, and actually made some friends.
But how long will he be able to keep his identity a secret? And why does he carry around that strange book?