Chiikawa’s Hiroma Arc: the souvenir stone and the old inn
Based on our Japanese story page and article on this arc; anime episodes checked on the official anime site (2026-10-01).
Usagi comes back from a trip with a pretty stone as a souvenir, and soon Chiikawa and Hachiware follow Usagi’s tracks to an old inn. Fans call this story the Hiroma Arc, after the sign hanging in the inn’s hall; it is also known as the Stone Arc. Here is where to read it in order, plus the volume and anime episodes, without spoilers.
- Original posts
- 19 posts on Nagano’s X, Aug 5, 2022 – Sep 2, 2022
- Book
- Vol. 6 (Japanese), released Dec 21, 2023
- Anime
- Episodes 291–299 (“Hiroma 1–9”), aired Nov 7, 2025 – Dec 5, 2025
- Other names
- Stone Arc, the inn story (fan names)
Read the Hiroma Arc in order
Our Japanese page shows all 19 of Nagano’s posts for this arc as X embeds, in posting order. The page is in Japanese, but the comic is exactly what you would see on X: scroll down from the top, then tap the next-page button at the bottom to continue.
- Page 2: The snake ornament in the hall
- Posts 9–19
- 19 is the number of Nagano’s posts we collected, not an official episode count. It’s a mid-length arc you can finish in one sitting.
What is the Hiroma Arc about? (no spoilers)
Usagi gives Chiikawa and Hachiware a pretty stone from a trip. Gazing at it, the two suddenly want to go somewhere too, follow Usagi’s trail, and arrive at an old inn.
- They find Usagi in a hall with a sign reading 拾魔 (read “hiroma”), but from there, the three gradually start acting differently than usual.
- Kodansha’s description of Volume 6 also mentions finding Usagi in the “hiroma” inside the inn.
- Fans often list it among the scarier arcs: a relaxed trip slowly turns uneasy. What happens at the inn, and how it ends, we leave to you.
What do “Hiroma” and “Tsutsuurauura” mean?
“Hiroma” sounds the same as 広間, the Japanese word for a large hall, but the story writes it with the characters 拾 (“pick up”) and 魔 (“demon”). Why those characters were chosen is not explained in the story.
- “Tsutsuurauura” is Usagi’s reply in the first post, when asked where it went. Japanese media reported that it comes from 津々浦々 (tsutsu-uraura), an idiom meaning “all over the country.”
- The word trended on X in Japan when the first anime episode of this arc aired (as reported). Where Usagi actually travels has not been revealed.
Which volume and which anime episodes?
The Hiroma Arc is in Volume 6 of the Japanese books (Kodansha). In the anime it is episodes 291 to 299, “Hiroma 1” to “Hiroma 9”.
- Volume 6 was released on Dec 21, 2023.
- The episodes aired in Japan from Nov 7, 2025 to Dec 5, 2025, on Fuji TV’s “Mezamashi TV”.
- We have only checked the Japanese books and the broadcast in Japan.
Characters and more to read
The trio of Chiikawa, Hachiware and Usagi carries this story, along with the people of the inn.
Frequently asked questions
What is “Hiroma” in Chiikawa?
It is the name on a sign in the hall of an old inn that Chiikawa and Hachiware reach while following Usagi. The story reads it “hiroma”; the meaning of the characters is not explained.
Which volume has the Hiroma Arc?
Volume 6 of the Japanese books (Kodansha).
Which anime episodes are the Hiroma Arc?
Episodes 291 to 299, aired in Japan from November to December 2025.
What does Usagi’s “Tsutsuurauura” mean?
It is reported to come from the Japanese idiom 津々浦々, “all over the country.” It is Usagi’s answer when asked where it went on its trip.
Sources
Pages marked (Japanese) are only available in Japanese.