Webupper moon six kaigaku explained | kimetsu no yaiba:
Outbreak of war | the seven deadly sins chapter 312 review:
Webdiscover the truth about kaigaku's power level in the demon slayer anime.
Examine the arguments and evidence surrounding his strength compared to zenitsu.
Webhantengu and gyokko died on the same night, kaigaku was probably already upper 6.
The reason he isn't upper 4 is that nakime became stronger than kaigaku when she was.