June 2nd is Diaper Day! Fair for the Picture Book 'Omutsu no Naka, Misete Misete!' Held
PIE International is hosting a promotional fair to give away 'Nezumi-kun Name Seals' with the purchase of the picture book 'Omutsu no Naka, Misete Misete!' in celebration of 'Diaper Day' on June 2nd, alongside an Instagram campaign for sock giveaways.
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- 📰 Published: May 26, 2026 at 19:00
- 🔍 Collected: May 26, 2026 at 10:31
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PIE International (Toshima-ku, Tokyo; President: Hiroyoshi Miyoshi) is holding a promotional fair in select bookstores to offer 'Nezumi-kun Name Seals' to customers who purchase the picture book 'Omutsu no Naka, Misete Misete!' in celebration of 'Diaper Day' on June 2nd. Simultaneously, an Instagram campaign to win 'Nezumi-kun' socks will be launched.
'Nezumi-kun Name Seals' perfect for nursery school supplies
These name seals feature Nezumi-kun and his friends. They are waterproof and durable, making them ideal for nursery school items.
* The sticker bonus applies only to the book 'Omutsu no Naka, Misete Misete!'
* Bonuses are limited in quantity and available while supplies last.
* Arrival dates and campaign start dates may vary by region and store.
Instagram campaign to win Nezumi-kun socks now underway!
To commemorate Diaper Day, the company is holding an Instagram campaign to give away a pair set of Nezumi-kun socks (adult and child sizes) to 5 winners selected by lottery.
How to enter:
1. Follow the official PIE International Picture Book & Children's Book account (https://www.instagram.com/pie__ehon/)
2. Like the eligible post.
Entry period:
Tuesday, May 26, 2026 – Tuesday, June 9, 2026, 23:59.
Prize details:
'Omutsu no Naka, Misete Misete!' Socks - Women's (approx. 22–25cm) / Kids' (approx. 13–18cm) pair set.
Number of winners:
5 people.
Potty training while having fun with Nezumi-kun
Starting with 'Omutsu no Naka, Misete Misete!', which has sold over 500,000 copies domestically, the company offers various books and items that help children enjoy potty training alongside Nezumi-kun.
'Omutsu no Naka, Misete Misete!' Text & Art: Guido Van Genechten; Translation: Rie Matsunaga
'Omutsu no Naka, Misete Misete! Toilet Dekita ne Sticker Book' Text & Art: Guido Van Genechten; Translation: Erisa Adachi
'Omutsu no Naka, Misete Misete! Odekake Mini Book' Text & Art: Guido Van Genechten; Translation: Rie Matsunaga
'Nezumi-kun Name Seals' perfect for nursery school supplies
These name seals feature Nezumi-kun and his friends. They are waterproof and durable, making them ideal for nursery school items.
* The sticker bonus applies only to the book 'Omutsu no Naka, Misete Misete!'
* Bonuses are limited in quantity and available while supplies last.
* Arrival dates and campaign start dates may vary by region and store.
Instagram campaign to win Nezumi-kun socks now underway!
To commemorate Diaper Day, the company is holding an Instagram campaign to give away a pair set of Nezumi-kun socks (adult and child sizes) to 5 winners selected by lottery.
How to enter:
1. Follow the official PIE International Picture Book & Children's Book account (https://www.instagram.com/pie__ehon/)
2. Like the eligible post.
Entry period:
Tuesday, May 26, 2026 – Tuesday, June 9, 2026, 23:59.
Prize details:
'Omutsu no Naka, Misete Misete!' Socks - Women's (approx. 22–25cm) / Kids' (approx. 13–18cm) pair set.
Number of winners:
5 people.
Potty training while having fun with Nezumi-kun
Starting with 'Omutsu no Naka, Misete Misete!', which has sold over 500,000 copies domestically, the company offers various books and items that help children enjoy potty training alongside Nezumi-kun.
'Omutsu no Naka, Misete Misete!' Text & Art: Guido Van Genechten; Translation: Rie Matsunaga
'Omutsu no Naka, Misete Misete! Toilet Dekita ne Sticker Book' Text & Art: Guido Van Genechten; Translation: Erisa Adachi
'Omutsu no Naka, Misete Misete! Odekake Mini Book' Text & Art: Guido Van Genechten; Translation: Rie Matsunaga
FAQ
「おむつのなか、みせてみせて！」フェアの内容は何ですか？
対象の絵本『おむつのなか、みせてみせて！』を購入した方に、通園グッズにも使える防水タイプの「ねずみくんおなまえシール」を店頭でプレゼントするフェアです。
Instagramキャンペーンの応募方法は？
パイ インターナショナルの絵本・児童書公式Instagramをフォローし、対象の投稿に「いいね」をすることで応募できます。
フェアやキャンペーンの期間はいつまでですか？
Instagramキャンペーンの応募期間は2026年5月26日（火）〜6月9日（火）23:59までです。
賞品のねずみくん靴下のサイズは？
レディース用（約22～25cm）とキッズ用（約13～18cm）のペアセットです。
絵本『おむつのなか、みせてみせて！』のシリーズには他にどのような本がありますか？
『おむつのなか、みせてみせて！ トイレできたねシールブック』や『おむつのなか、みせてみせて！ おでかけミニブック』などが展開されています。