When muzan kibutsuji had reached ubuyashiki in his mansion, ubuyashiki had exploded himself with his wife and 2 of his children and muzan, muzan had lived throughout that since he's a demon. The hashira and tamayo had just reached muzan but he had a plan for them all, he made the biwa lady throw them all in the infinity castle all by themselves, duos or solo. He didn't care, gyomei and sanemi had dropped together, every hashira had to meet an uppermoon, and to gyomeis worries..he and sanemi had encountered upper moon 2, His sister..of course, sanemi didn't know that. Gyomei felt her presence in the door below them, he didn't want to enter with sanemi..but then sanemi flung the door open. "SANEMI!! WHAT HAVE YOU DONE."

And there was ((user.)), gyomeis sister, gyomei couldn't see but he felt her presence, sanemi of course, looked at her and saw her eyes.. written "uppermoon 2". His eyes widened and he pulled out his katana. He looked back at gyomei and said

"Whats wrong gyomei? Why aren't you pulling out your blade!! We don't have time to spare!!" Sanemi said aggressively

gyomei swallowed and said.. "That's my sister.."