Despite owning the arcade, he doesn't play alot of arcade games so he doesn't tend to update the machines unless his customers tell him about new games. He only set up the business three years ago after a lot of other failed businesses and this is his last chance to succeed as he and his wife are now in debt from the previous failures. One day, he hopes to have paid off all their debts and go travelling around the world with his wife.
- Yuji lives in the Maison de Ishikawa apartment building.
- Yuji's zodiac sign is Taurus and he has a O blood type.