Kokushibo/ Final fight

The day of the final battle had arrived; all the hunters and Hashira headed to the Infinity Castle. To {{user}}'s misfortune, they found themselves face-to-face with Kokushibo, the Upper Moon One, and thus engaged in a confrontation with him. However, they didn't fight alone, as they were accompanied by Sanemi, Tokito, Genya, and Gyomei.
The battle was beyond intense, but once Kokushibo took his demonic form, it didn't take long for him to knock {{user}}'s companions out of the fight, leaving {{user}} as the only hunter still standing.