Five new items are joining the THE IDOLM@STER SHINY COLORS merchandise lineup from Nijigen COSPA, timed to coincide with 283 PRODUCTION Solo Live Collection -Master ShowPiece-, a concert set for Saturday, September 26, and Sunday, September 27, 2026, at Keio Arena TOKYO. The new pieces are lined up for the pre-sale final running Thursday, July 2, through Sunday, July 12, 2026, on Asobi Store.
The lineup includes limited-edition all-print T-shirts for two characters, a limited acrylic art stand, an updated version of an existing T-shirt design, and a new shoulder tote.
For the full sales details, visit: https://www.cospa.com/nijigencospa/event/id/27863
[Limited] 幽谷霧子 All-Print T-Shirt (Comes With a Bonus Sticker)

- Size: M / L / XL
- Price: 4,800 yen each (tax included)
- Availability: Limited-distribution item, sold only through the 283 PRODUCTION Solo Live Collection -Master ShowPiece- pre-sale final (July 2–12, 2026)
The design is printed on the front only, and comes packaged with a bonus holographic sticker.
[Limited] 樋口円香 All-Print T-Shirt (Comes With a Bonus Sticker)

- Size: M / L / XL
- Price: 4,800 yen each (tax included)
- Availability: Limited-distribution item, sold only through the 283 PRODUCTION Solo Live Collection -Master ShowPiece- pre-sale final (July 2–12, 2026)


Both T-shirts use a 5.6 oz fabric that is breathable and moisture-wicking, with a seamless "round barrel" body cut so the shirt keeps its shape wash after wash, plus a ribbed collar and double-stitched cuffs and neckline for durability. Note that because of the all-over print technique, some fading or gaps around the seams and underarm area may occur.
[Limited] 潜・潜・夏・娘 Acrylic Art Stand (Comes With a Bonus Sticker)


- Size: Plate approx. 11.5 cm (H) x 17.5 cm (W); stand base approx. 1.5 cm x 6 cm
- Material: Acrylic
- Price: 2,600 yen (tax included)
- Availability: Limited-distribution item, sold only through the 283 PRODUCTION Solo Live Collection -Master ShowPiece- pre-sale final (July 2–12, 2026)
This summer-themed design featuring Antica comes with a stand base, and its compact size makes it easy to display on a bookshelf or desk.
浅倉透 "I Don't Have My Wallet" T-Shirt Ver2.0

- Size: M / L / XL
- Color: White
- Price: 3,300 yen (tax included)
- Availability: Sold during the 283 PRODUCTION Solo Live Collection -Master ShowPiece- pre-sale final (July 2–12, 2026), in the White colorway in sizes M–XL. It may also be offered at other events and select retailers; online pre-orders through the COSPA official shop have not yet been announced.
Illustration: ちと
The T-shirt uses the same durable 5.6 oz fabric, seamless round-barrel cut, ribbed collar, and double-stitched seams as the other shirts in the lineup, designed to hold up to everyday wear.
283 PRODUCTION Shoulder Tote

- Size: Approx. 40 cm x 34 cm, 13 cm gusset
- Material: 100% cotton
- Color: Black
- Price: 2,200 yen (tax included)
- Availability: Sold during the 283 PRODUCTION Solo Live Collection -Master ShowPiece- pre-sale final (July 2–12, 2026). It may also be offered at other events and select retailers; online pre-orders have not yet been announced.
Made from a durable, heavyweight canvas, the tote has a snap-button closure, an interior pocket for a pass case or phone, and a long strap that works cross-body, making it a handy sub-bag for events or everyday errands.
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