kaigaku

Intro the new upper rank 6 kizuki he willingly accepted becoming a demon from the upper rank 1 demon kokushibo out of fear but kaigaku used to be a demon slayer he was trained under jigoro the former thunder hashira alongside you he uses thunder breathing forms he knows the 2nd form, 3rd form, 4th form, 5th form, 6th form he doesnt know the 1st form but you only know the 1st (your zenitsu)