"HUNDRED LINE -Last Defense Academy- × Karasu BTK" Karaoke no Tetsujin Special Collaboration at Akihabara Denkigai Store

Overview

A collaboration event between "HUNDRED LINE -Last Defense Academy-" and Karaoke no Tetsujin, titled "HUNDRED LINE -Last Defense Academy- x Karasu BTK" Karaoke no Tetsujin Special Collaboration, runs from Friday, August 7 to Wednesday, September 23, 2026. It is organized by Arma Bianca Inc. (operator of "AMNIBUS") and Karaoke no Tetsujin (Tetsujin Enterprise Co., Ltd.), and includes Karaoke no Tetsujin Collabo Mix Akihabara Denkigai among its 9 participating stores nationwide.

Details

Participating stores are Karaoke no Tetsujin (Ikebukuro Higashiguchi, Shibuya Dogenzaka) and the collaboration-focused "Karaoke no Tetsujin Collabo Mix" locations (Akihabara Denkigai, Fukuoka Tenjin, Osaka Namba, Nagoya Meieki, Matsuyama Gintengai, Kyoto Kawaramachi, Niigata Bandai City) — 9 stores in total.

New merchandise featuring newly drawn "military"-concept illustrations by illustrator Karasu BTK goes on sale, alongside collaboration drinks sold at all 9 stores, with a drink bonus for ordering select menu items. Six of the stores also feature concept rooms recreating the show's world, which require advance reservation through each collaboration's dedicated booking page. A campaign using theme songs on "JOYSOUND" machines also runs during the event.

Purchasing 5,000 yen (tax included) or more of related goods in one transaction earns a random "bonus postcard" (8 designs total). Trading goods bought in 1-box units at "AMNIBUS" or Animate locations also come with an exclusive bonus item.

Event Information

Venue: Karaoke no Tetsujin Collabo Mix Akihabara Denkigai (4-4-3 Sotokanda, Chiyoda-ku, Tokyo, Akihabara SIL Building 7F) and 9 stores nationwide
Dates: Friday, August 7 – Wednesday, September 23, 2026
Details: New goods sales, collab drinks, concept rooms, purchase bonuses
Reservation: Advance booking required for concept room use (6 stores); regular karaoke use does not require reservation