Inokashira Park is based on the real location in Tokyo, Japan. The famous Inokashira Pond is the only visible part of that area. Its full name Inokashira Onshi Kōen translates to "Inokashira Imperial Grant Park" in English.
Inokashira Park is one of the hangout locations available in the Tokyo map. It is unlocked after Lovers Arcana Confidant (Ann Takamaki) has reached rank 3, or if the player reads the "Weekend Parks" book. If Munehisa Iwai is invited to this location, he gifts the player with a Swan boat figure that can be displayed in the player's shelf.
Persona 5 Royal Edit
Principal Kobayakawa organizes a clean up effort of Inokashira park scheduled for May 30th. Many students, including Ryuji, believe it to be a PR stunt to protect Shujin's reputation after Kamoshida's change of heart. This event is also automatically starts the Faith Confidant.