Seiko Oshi no Ko Aqua Model
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The Seiko Oshi no Ko Aqua Model is one of five character watches from Seiko's Oshi no Ko collaboration, alongside Ai, Ruby, Kana Arima, and Akane Kurokawa models. It reached JumpIchiban's storefront in September 2025, after Ai's December 2024 debut, at PREMICO's shared ¥59,800 (¥65,780 tax-in) price, limited to 2,000 pieces. The chronograph dial fades from navy to pale blue, with a gold "first star" (一番星) at 12 o'clock for Aqua Hoshino and a dark subdial at 6 o'clock lettered "Aqua" over three small stars. Blue chronograph hands pick out his signature color, and the caseback carries his signature and the ©Aka Akasaka x Mengo Yokoyari/Shueisha, "OSHI NO KO" Partners credit. It ships on a blue leather strap and is licensed merchandise, not a watch shown on screen. (Seiko; JumpIchiban)
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Official partnerships
| Title | Year | Type |
|---|---|---|
| Oshi no Ko (2023) | 2023 | Anime |