There's Someone Here

Momo finds that shrinking has done nothing to weaken her psychic powers, so she uses them to drift through the library in search of the tiny man from before. Her search is broken off when a girl from school walks in, knife in hand, clearly looking for her. Momo ducks out of sight and wonders who the stranger is, what she wants, and how she even knows about the shrinking. The girl shouts at Momo to surrender and sweeps books from the shelves so one will land on her, then closes in. Finding nothing beneath the fallen book and running short on time as the bell sounds, she leaves. Perched atop a bookcase, Momo is left asking herself just who that girl could be.

Momo learns that her psychic abilities stayed full strength even at her new size. A knife-wielding girl from school comes looking for her and draws near. Momo tries to throw her off, but the girl bellows for her to give up and topples books down onto her. As soon as the bell sounds, the strange girl bolts from among the shelves.

Just nineteen pages, this Volume 20 chapter released on October 1, 2024 under the title なんか来たじゃんよ. It falls in the Kozuka Knives Arc of the Ultimate Yokai Saga, between Chapter 167 and Chapter 169. The chapter marks the debut of Koki Yukishiro, the knife-bearing girl stalking Momo.