Ainori (lost PS1 game; 2002)
Ainori was a PS1 game based off the 1999 Japanese TV show of the same name. The game was supposedly announced in late 2001 and was set to release in spring 2002, but was likely cancelled very early in development. As a result, sources on the game are very scarce and said sources have little actual information besides the confirmation of its existence and its cancellation.
Some sources say the game was an action game. however, this is could likely be misinformation, spread either intentionally or unintentionally due to the sheer lack of information on the game