Panel Discussion and Exhibition for the Legendary Card Battle 'Saitama Den' to Be Held at Omiya Library!

The legendary card battle 'Saitama Den,' themed on the eternal rivalry between 'Urawa vs Omiya,' was mysteriously released in April last year and became a surprise hit. A panel discussion and exhibition event will now be held at the Saitama City Omiya Library, with members of the 'Saitama Den' Executive Committee participating. This marks the first-ever initiative in which Omiya Library, a public facility in Saitama City, directly addresses what has long been considered the city’s biggest taboo—the rivalry between the two districts. Expect exciting revelations on the day!

July 18, 2026 (Sat) – Panel Discussion

The Truth Behind That 'Battle'! Omiya and Urawa – Let’s Hear the Real Story

● 14:00–14:30 – Part 1: Keynote Speech – 'The Secret Story Behind the Development of Saitama Den'

Speakers: Yoshihiro Nakajima, Alshe Co., Ltd. Ryutaro Hayashi, Game Development Group PANTS

→ They will share the inspiration behind creating 'Saitama Den' and behind-the-scenes stories from development.

Yoshihiro Nakajima, Alshe Co., Ltd. President of 'Alshe,' a commercial facility in front of Omiya Station. Born and raised in Saitama City.

Ryutaro Hayashi, Game Development Group PANTS Game planner and chief engineer at PANTS.

● 14:30–15:15 – Part 2: Panel Discussion

Panelists: Fuyuhiko Harada, Former Mayor of Urawa Ward Shinichiro Takahashi, Former Mayor of Omiya Ward Yoshihiro Nakajima, Alshe Co., Ltd. Yoshitaka Kobayashi, Game Development Group PANTS

→ A passionate, locally rooted discussion about the unique charms and strengths of both Urawa and Omiya!

Fuyuhiko Harada, Former Mayor of Urawa Ward Joined the former Urawa City government in 1988. Served as Mayor of Urawa Ward from 2024 to March 2026.

Shinichiro Takahashi, Former Mayor of Omiya Ward Joined the former Omiya City government in 1989. Served as Mayor of Omiya Ward from 2025 to March 2026.

Yoshihiro Nakajima, Alshe Co., Ltd. President of 'Alshe,' a commercial facility in front of Omiya Station. Born and raised in Saitama City.

Yoshitaka Kobayashi, Game Development Group PANTS Planning director and producer at PANTS. Resides in Tokorozawa City. A devoted listener of NACK5.

● 15:15–16:00 – 'Saitama Den' Card Game Experience Session

→ Try playing 'Saitama Den' for yourself!

[Concurrent Event] 11:00–13:00 – Become a 'Saitama Den' Card!

Create your own 'Saitama Den' card using your photo and receive it as a gift on the spot.

※ Participation is limited.

Venue: Ice no Mori Hiroba, 1st Floor, Saitama City Omiya Library

Date & Time: July 18, 2026 (Sat) 14:00–16:00

Target Audience: Open to all

Capacity: 30 people (lottery if oversubscribed)

Registration: Via the Omiya Library website from 9:00 on June 18 (Thu) to 15:00 on July 5 (Sun).

Inquiries: Saitama City Omiya Library, tel: 048-643-3701

July 9 (Thu) – July 18 (Sat), 2026

'Saitama Den' Card Game – Panel Exhibition

Learn about the rules and cards of 'Saitama Den' through informative panels. That familiar place or person you know might even appear as a card!

Venue: Ice no Mori Hiroba, 1st Floor, Saitama City Omiya Library

Period: July 9 (Thu) – July 18 (Sat), 2026

Closed: Open daily during the exhibition period