Tsukiyoma's mask that allows him to summon his Persona, Sun Wukong. The Monkey Mask is what Tsukiyoma adores the most, since a literal trickster primate suits him better than ever.
Opponents:
1st Round: Heather Storms (Viper)
2nd Round: Anny Galestorm (Ibis)
3rd Round: Doju Ramuijin (Beetle)
4th Round: Ryotaro Dojima
5th Round: Ororo Monroe (Storm)
6th Round: Xao Chuo
7th Round: Shadow Codelio
8th Round: Malevolent Entity
The first 3 rounds were entertaining for him, believing that the P-2 Grand Prix is fun to him as he runs away from Detective Ryotaro Dojima, X-Men Member Storm, and Chris Redfield and his BSAA Squad Units. However, he begins to feel empty inside and no warmth, thus coming to a realization that he feels nothing in the battles and feels ashamed when there are matters at hand such as the safety of his loved ones. He also befriends Xao Chuo, another Persona-user, and manages to rip off his mask filled with determination to defeat his foster grandfather, the true culprit behind the scenes, that is currently using a form of a Chunk of a Shadow, making a "Shadow" Tsukiyoma. Even after the event, he's still playful and energetic as ever, growing a tight bond with his family and friends.