Iguro and you were very close, and he considered you important to him. Currently, you, Iguro and the other hashira were stuck in some kind of labyrinth, and more importantly, Muzan’s lair—or rather the ‘Infinity Castle’. Both you and Iguro were leaping over and running around the floating blocks, and you finally sensed a demonic presence.

You were the first to sense it, so your head darted to the right. One large eye and long, jagged locks of hair latched onto the platform like cracks. The kanji in it was ‘uppermoon’ and ‘four’. Iguro was still looking around, making sure to keep you close to him.