Big Brother Is Over! (Onimai) Merchandise
Anime Store.JP (Anist) currently offers a wide selection of official, brand-new merchandise for *Onii-chan wa Oshimai!* (Oni-mai), including plush toys, pin badges, and acrylic stands. We feature a diverse lineup of items such as stickers, keychains, and tapestries, and we’re constantly adding new products and pre-order items. We also carry merchandise related to the collaboration café and limited-edition items.
Showing 37 products
!["Big Brother Is Done!" Newly Illustrated BIG Acrylic Stand [After the Bath Ver.] 1 by Mahiro Ouyama [202605 Reprint]](http://anime-store.jp/cdn/shop/files/4573613726989_001_33065588-725d-40df-85cf-6398d4bc4800_600x@3x.progressive.jpg?v=1779237643)
SKU: 4573613726989
AVAILABILITY: In stock (-6 items)
PRODUCT TYPE: アクリルスタンド・フィギュア（アクスタ）
VENDOR: メディコス・エンタテインメント
©Neko to Ufu, Ichijinsha / "Onimai" Production CommitteeIntroducing Mahiro Ouyama from the "Big Acrylic Stand [Just Out of the Bath ver.]" featuring original artwork from "Big Brother Is Over!"■Size: Main body: Approx. H160mm × W59mm or less; Base: Approx. H70mm...
!["Big Brother Is Done!" Original Acrylic Diorama [Re-release: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444430_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444430
AVAILABILITY: In stock (-2 items)
PRODUCT TYPE: アクリルスタンド・フィギュア（アクスタ）
VENDOR: メディコス・エンタテインメント
©Neko to Ufu, Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new acrylic diorama from "My Big Brother Is the End!"■Size: Flat dimensions: Approx. H290mm × W230mm or less; Assembled: Approx. H103mm × W184mm × D40mm■Material: Acrylic■Distributor: Medicos Entertainment
!["Big Brother Is Done!" Original Art Pin Set [B] [202605 Reprint]](http://anime-store.jp/cdn/shop/files/4570188444423_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444423
AVAILABILITY: In stock (-1 items)
PRODUCT TYPE: 缶バッジ
VENDOR: メディコス・エンタテインメント
©Neko to Ufu · Ichijinsha / "Onimai" Production CommitteeIntroducing the "My Big Brother Is Doomed!" Original Art Pin Set [B]!■ Size: Approx. 65mm diameter■ Material: Steel, PP■ Distributor: Medicos Entertainment
!["Big Brother Is Done!" Original Art Pin Set [A] [202605 Reprint]](http://anime-store.jp/cdn/shop/files/4570188444416_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444416
AVAILABILITY: In stock (-1 items)
PRODUCT TYPE: 缶バッジ
VENDOR: メディコス・エンタテインメント
©Neko to Ufu · Ichijinsha / "Onimai" Production CommitteeIntroducing the "Oni-chan wa Oshimai!" Original Art Pin Badge Set [A]!■ Size: Approx. 65mm diameter■ Material: Steel, PP■ Distributor: Medicos Entertainment
!["Big Brother Is Done!" Newly Illustrated Acrylic Keychain #4: Momiji Hototsuki [Re-release: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444324_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444324
AVAILABILITY: In stock (-2 items)
PRODUCT TYPE: キーホルダー
VENDOR: メディコス・エンタテインメント
©Neko to Fu / Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new acrylic keychain featuring Momiji Hoduki from "Oni-chan wa Oshimai!"■ Size: Approx. H72mm × W68mm■ Material: Metal, Acrylic ■Distributor: Medicos Entertainment
!["Big Brother Is Finished!" Newly Illustrated Acrylic Keychain #3: Kaede Hozuki [Re-release: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444317_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444317
AVAILABILITY: In stock (-1 items)
PRODUCT TYPE: キーホルダー
VENDOR: メディコス・エンタテインメント
©Nekotoufu, Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new acrylic keychain featuring Kaede Hoozuki from "Oni-chan wa Oshimai!"■ Size: Approx. H72mm × W68mm■ Material: Metal, Acrylic ■Distributor: Medicos Entertainment
!["Big Brother Is Done!" Newly Illustrated Acrylic Keychain 2: Mihari Oyama [Re-release: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444300_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444300
AVAILABILITY: In stock (-2 items)
PRODUCT TYPE: キーホルダー
VENDOR: メディコス・エンタテインメント
©Neko to Ufu · Ichijinsha / "Oni Mai" Production CommitteeIntroducing a brand-new acrylic keychain featuring Mihari Ouyama from "Oni-chan wa Oshimai!"■ Size: Approx. H72mm × W68mm■ Material: Metal, Acrylic ■Distributor: Medicos Entertainment
!["Big Brother Is Done!" Original Acrylic Keychain #1 by Mahiro Ouyama [Reprint: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444294_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444294
AVAILABILITY: In stock (-2 items)
PRODUCT TYPE: キーホルダー
VENDOR: メディコス・エンタテインメント
©Neko to Ufu, Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new acrylic keychain featuring Mahiro Ouyama from "Oni-chan wa Oshimai!"■ Size: Approx. H72mm × W68mm■ Material: Metal, Acrylic ■Distributor: Medicos Entertainment
!["Big Brother Is Done!" Newly Illustrated BIG Acrylic Stand #4: Momiji Hoduki [Re-release: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444287_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444287
AVAILABILITY: In stock (-3 items)
PRODUCT TYPE: アクリルスタンド・フィギュア（アクスタ）
VENDOR: メディコス・エンタテインメント
©Neko to Fu / Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new BIG acrylic stand featuring Momiji Hoduki from "My Big Brother Is the End!"■Size: Main body: Approx. H175mm × W104mm or less; Base: Approx. H55mm × W73mm *Sizes vary by...
!["Big Brother Is Done!" Newly Illustrated BIG Acrylic Stand #3: Kaede Hozuki [Reprint: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444270_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444270
AVAILABILITY: In stock (-3 items)
PRODUCT TYPE: アクリルスタンド・フィギュア（アクスタ）
VENDOR: メディコス・エンタテインメント
©Neko to Fu / Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new BIG acrylic stand featuring Kaede Hozuki from "Onii-chan wa Oshimai!"■Size: Main body: Approx. H175mm × W104mm or less; Base: Approx. H55mm × W73mm *Sizes vary by character.■Material: Acrylic■Distributor: Medicos...
!["Big Brother Is Done!" Newly Illustrated BIG Acrylic Stand 2: Mihari Oyama [Reprint: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444263_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444263
AVAILABILITY: In stock (-4 items)
PRODUCT TYPE: アクリルスタンド・フィギュア（アクスタ）
VENDOR: メディコス・エンタテインメント
©Neko to Ufu · Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new BIG acrylic stand featuring Mihari Ouyama from "My Big Brother Is Over!"■Size: Main body: Approx. H175mm × W104mm or less; Base: Approx. H55mm × W73mm *Sizes vary by character.■Material:...
!["My Big Brother Is Done for!" Newly Illustrated BIG Acrylic Stand - Mahiro Ouyama [Reprint: May 2026]](http://anime-store.jp/cdn/shop/files/4570188444256_001_600x@3x.progressive.jpg?v=1779237643)
SKU: 4570188444256
AVAILABILITY: In stock (-6 items)
PRODUCT TYPE: アクリルスタンド・フィギュア（アクスタ）
VENDOR: メディコス・エンタテインメント
©Neko to Fu / Ichijinsha / "Onimai" Production CommitteeIntroducing a brand-new BIG acrylic stand featuring Mahiro Ouyama from "Onii-chan wa Oshimai!"■Size: Main body: Approx. H175mm × W104mm or less; Base: Approx. H55mm × W73mm *Sizes vary by character.■Material: Acrylic■Distributor: Medicos...
SKU: 4560393843319
AVAILABILITY: In stock (-1 items)
PRODUCT TYPE: フィギュア
VENDOR: キューズQ
© Nekotoufu・Ichijinsha/“Oni-mai” Production Committee W-Wait... this looks just like a girl!From the TV anime "Onii-chan wa Oshimai!", the heroine? Mahiro Oyama appears in the bunny girl costume familiar from the show's ending sequence! This figure capturesthe moment she's making a...