Make nakime's BDA like:
Skill 1 - Teleportation - Who ever is a bit close to the player will be teleported to the infinity castle.
Skill 2 - Player can make herself or best if the other players rotate.
Skill 3 - Player can select a target then come close to its enemy then a massive castle part will smash to the enemy from the top.
Skill 4 - Player plays the biwa then a super strong sound waves come out throught its path.
Skill 5 (Ultimate) - Player teleports the selected player into the infinity castle then muzan will appear and then punishes the enemy then after that they will be teleported back.