K-ON!（けいおん！）fans are getting a fresh wave of official band-room fashion. COSPA’s “NijiGEN COSPA” brand has announced new full graphic T-shirts, pass cases, reel keyholders and metal carabiners themed around Houkago Tea Time, with designs for Yui Hirasawa, Mio Akiyama and Azusa Nakano leading the line. The items will debut as early sales at Comiket 107 before rolling out for general release in late March 2026 via COSPA’s official shops and online store.
New K-ON! designs bring HTT back into everyday outfits
The new lineup focuses on letting you sneak HTT into day-to-day life rather than just adding another wall scroll to the room. Under the NijiGEN COSPA label—COSPA’s brand aimed at core anime fans who want character-heavy but wearable designs—you get three full graphic T-shirts, three matching pass cases, three metal carabiners and a single HTT-branded reel keyholder.
All five band members are represented across the range, but the spotlight this time is on Yui, Mio and Azusa, who each get a coordinated T-shirt, pass case and carabiner. Prices are set at 6,930 yen for the shirts, 1,650 yen for pass cases and the HTT reel keyholder, and 1,430 yen for each metal carabiner, with general sales planned for late March 2026.
Full graphic T-shirts themed around Yui, Mio and Azusa
The three headline pieces are the full graphic T-shirts:
Yui the UK Ver. uses London-inspired visuals around Yui, echoing the movie’s trip with a Union Jack mood and travel vibes. Mio Sparkle Snow Ver. frames Mio standing in falling snow, a calm but glittering winter scene that plays into her cool image. Azusa Winter Gift Ver. shows Azusa hugging a present to her chest, a sweet “gift from Azu-nyan” illustration ready for cold-weather layering.
All three use full-front prints on 100% cotton white tees, with sizes S–XL available (S excluded from Comiket early sales). The cotton build and single-side print make them easier to wear as inner layers under a jacket than some louder polyester full-print tees, which is great if you want K-ON! closer to “daily outfit” than “only for cons.”
Pass cases, reel keyholders and carabiners as daily-use gear
If you would rather keep your band love a bit more subtle, the small items are where HTT really becomes part of your routine. The pass cases for Yui, Mio and Azusa are single-pocket faux-leather card holders with a high-resolution full-color print and a clip so you can hang them from a bag or belt loop. The window is shaped to hide personal info on your card, making them practical for commuter passes or office badges.
The HTT reel keyholder is designed to pair with those pass cases: it is a gunmetal-coated original COSPA shape, manufactured in Tsubame City, Niigata—an area known for high-end metalwork—with a reel that stretches around 50 cm so you can tap a card reader without unhooking anything. The matching metal carabiners, also made in Japan, give you another way to add keys or mini tools while quietly flying your favorite member’s colors.
For overseas fans, these kinds of accessories are often the easiest K-ON! pieces to blend into work or school, even if full graphic shirts feel a bit too bold.
Design details and materials fans can expect from NijiGEN COSPA
COSPA has been producing licensed anime apparel since 1995 and is celebrating its 30th anniversary in 2025, so the company is well past the “cheap novelty” phase. The K-ON! drop leans on that experience: cotton shirts for comfort, faux-leather pass cases for a more polished look, and metal parts produced in a region famous for precision hardware. The usual caveats apply—front-only prints and some possible ink breaks along seams due to the full-print method—but long-time COSPA collectors will recognize that as normal for this style of merch.
Using COSPA online shops to pick up new K-ON! goods from overseas
The new items will see early sales at Comiket 107’s GEE!STORE booth (West Halls 3–4, No.1422) on December 30–31, 2025, but if you are not flying to Tokyo Big Sight, you are not locked out. General sales will run through COSPA’s official web store and the NijiGEN COSPA K-ON! page, where international fans can order via proxy or forwarding services much like any other Japan-only shop. For details, you can check the COSPA Comiket 107 info page and the dedicated K-ON! product list on NijiGEN COSPA.
In short: if you are a K-ON! fan abroad looking for one piece to start with, a pass case plus the HTT reel keyholder is a very safe daily combo. If you want something louder for concerts or anime events, pick your oshi’s full graphic T-shirt and throw a jacket over it—HTT on the inside, grown-up on the outside.
©かきふらい・芳文社／桜高軽音部
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