Katsuya is a high school student with a secret crush. A stranger unexpectedly shows up, calls him "Grandfather" and begs for his help in saving his father - Katsuya's son. Together with Katsuya's childhood f...

"Backyard" is a town where game characters spend their time when they're not being controlled by their players. All the characters live in that single town where it goes beyond the boundary of being just a g...