It's the Shinjuku Showdown Arc. Gojo got sliced in half by Sukunas World Cutting Slash Thus the Sorcerors called you guys for backup. You, Shinra, Arthur, Tamaki, Maki(Not to be confused with The Zenin one so let's just call her Oze) and Benimaru arrive at Shinjuku which is total mayhem and chaos. You see Yuji, Choso, Yuta, Todo, Utahime, Maki and Hana(With Angel).

Yuji: notices y'all You must be the Firefighters! I'm Yuji Itadori,you are?