Chiikawa’s Pajama Parties Arc: the singing group and how to read it
Based on our Japanese story page and our article on the Pajama Parties; anime episodes checked on the official anime site (2026-10-01).

“Pajama Parties” is a group of four who sing and dance in matching pajamas sold by Pochette Yoroi-san. As the day of a big stage approaches, Chiikawa, Hachiware and Usagi start looking for what they can do. Nagano posted the story on X from spring to autumn 2021; it is collected in Volume 4 and was adapted in 12 anime episodes. This page shows where to read it in order, without spoilers.
- Original posts
- 30 posts on Nagano’s X, Apr 21, 2021 – Sep 24, 2021
- Book
- Vol. 4 (Japanese), released Jul 22, 2022 · Korean edition 먼작귀 (Daewon C.I.) Vol. 4
- Anime
- Episodes 144–155 (“Pajama Parties 1–12”), aired Feb 23, 2024 – Apr 2, 2024
- Main characters
- Chiikawa, Hachiware, Usagi, the Pajama Parties, Pochette Yoroi-san
Read the Pajama Parties Arc in order
Our Japanese page lines up all 30 of Nagano’s posts for this arc as X embeds, in posting order, across 3 pages. The reading page is in Japanese, but you only need to scroll: Nagano’s X posts are lined up from top to bottom in order, and on longer arcs the 「次のページ」 (Next page) button at the bottom takes you on.
- Page 1: Pajamas and the first song(Japanese)
- Posts 1–10
- Page 2: Stand-in members and the first show(Japanese)
- Posts 11–20
- Page 3: The day of the Mucha Fes(Japanese)
- Posts 21–30
- 30 is the number of Nagano’s posts we collected, not an official episode count.
- The posts were spread over about five months, so reading them in one go makes the flow from pajamas to songs easier to follow.
What is the Pajama Parties Arc about? (no spoilers)
The pajamas at Pochette Yoroi-san’s stall keep selling out. Those who finally get a pair gather in a field in matching pajamas, a song is born, and the group starts performing in front of others, until an invitation to a big event arrives.
- As the show nears, the group runs short of members. Usagi volunteers, and Chiikawa and Hachiware step onto a stage for the first time as stand-ins.
- Not everything goes well, and everyone keeps practicing for the next, bigger stage: the “Mucha Fes” (むちゃフェス).
- Kodansha’s description of Volume 4 says Chiikawa and friends try to protect the group’s stage in their place. What happens on the festival day is best found in the comic or the anime.
Who are the Pajama Parties?
A group of four who sing and dance in pajamas made by Pochette Yoroi-san, as the official anime character page puts it. They are called by the colors of their pajamas: green, pink, white and purple.
- Who is inside the pajamas, the four members’ names, and how they met have not been revealed, as of October 2026.
- Their faces are drawn gray without eyes or mouths, the way unnamed residents of Chiikawa’s world are usually drawn. Seeing those background characters take the lead is part of the arc’s charm.
- On Feb 23, 2024, the day episode 144 aired, the song “Pajama Parties no Uta” was released.
Which volume and which anime episodes?
The Pajama Parties Arc is collected in Volume 4 of the Japanese books (Kodansha). In the anime it is episodes 144 to 155, titled “Pajama Parties 1” to “Pajama Parties 12”.
- Volume 4 was released on Jul 22, 2022.
- The episodes aired in Japan from Feb 23, 2024 to Apr 2, 2024, on Fuji TV’s “Mezamashi TV”.
- Before the group gets its name, the pajamas themselves appear in episode 127 “Popular Pajamas” and episode 133.
- We have only checked the Japanese books and the broadcast in Japan.
Characters and more to read
Chiikawa, Hachiware and Usagi carry the story alongside the group, with Kurimanju appearing too.
Frequently asked questions
Who is inside the Pajama Parties’ pajamas?
It has not been revealed. The four are only called by their pajama colors (green, pink, white and purple), and their names and how they met are not told either.
Which volume has the Pajama Parties Arc?
Volume 4 of the Japanese books (Kodansha).
Which anime episodes are the Pajama Parties Arc?
Episodes 144 to 155, “Pajama Parties 1” to “Pajama Parties 12”, aired in Japan from February to April 2024.
Who makes the pajamas?
Pochette Yoroi-san, one of the armored “Yoroi-san”, who loves cute things and makes and sells pochettes and pajamas.
Where can I read it?
The original posts are on Nagano’s X account. Chiifan’s Pajama Parties Arc pages show all 30 posts in order.
Sources
Pages marked (Japanese) are only available in Japanese.