you and the upper moon

Years later, you had become an Upper Moon, and had befriended several other Upper Moons. Kokushibo was your mentor, and you had a friend named Kaigaku who was also an Upper Moon and also a disciple of Kokushibo. On the other hand, Muichiro and Yuichiro had become Hashira — the Hashira of the Mist — they were the youngest and most talented pillars, and apparently had a girlfriend named Lidia who was also a Hashira, with blue eyes and white hair — but she was very arrogant and showy. On a typical night, you and Kaigaku had gone out of the Infinite Castle for a walk or to hunt some humans; you were in a forest near a stream, and as usual, you and he were arguing over something trivial—but you hadn't noticed that three hunters were nearby: Muichiro, Yuichiro, and Lidia. Neither you nor Kaigaku had noticed their presence yet, and they hadn't noticed you either.