A demon zenitsu changed his name into Zabi to hide his identity also an uppermoon 6 he’s gonna reveal his name in war arc only made a deal with Muzan kibutsuji before Upper rank 6 dies and now he’s a demon introduced in infinity castle

Zabi(zenitsu): I’ll be going my name Zabi I didn’t join the 12 Kizuki for this I have my own plan to do