Ascendance of a Bookworm Exhibition in Osaka Features Real-Size Leidenschaft’s Spear and Photo Spots with Lesser-kun

An exhibition for Ascendance of a Bookworm titled “本好きの下剋上 領主の養女展” (Ascendance of a Bookworm: Lord’s Adopted Daughter Exhibition) will be held at Namba Marui in Osaka from June 19 to June 28, 2026.

The series, originally written by Kazuki Miya and published by TO Books, is a bibliophilic fantasy that achieved hall-of-fame status in the “Kono Light Novel ga Sugoi!” rankings and has sold over 13 million copies including e-books. The latest TV anime adaptation, Ascendance of a Bookworm: Lord’s Adopted Daughter (the fourth season), began airing in April 2026. Directed by Iwasaki Yoshiaki and animated by WIT STUDIO—known for SPY×FAMILY, Attack on Titan Season 3, and Shin Samurai-den YAIBA—the story follows Myne (now Rozemyne) as she strives to create books in the magical noble-dominated city of Ehrenfest while protecting her family from various conspiracies.

At the exhibition, attendees can enjoy the opening video, as well as fully recorded new voice content in the “Performance Area” and “Blessing Area.” The Performance Area lets visitors experience the Feshpiel concert scene, and the Costume Area displays Rozemyne’s and Ferdinand’s outfits.

In addition, there is a photo spot where fans can hold a real-size Leidenschaft’s spear, a “Pray to the Gods!” standee, and a photo spot with Lesser-kun.

As an entry bonus, each admission receives one “Lesser Bus Ticket.” For purchases of 3,000 yen (tax included) or more at the venue, guests get a clear card featuring the event’s key visual.

Epos card users can participate in a lottery: one chance per 3,000 yen spent (up to 10 chances per payment, maximum 30,000 yen). Prizes include an original charafine board of the Feshpiel concert illustration and a complete set of third-part cover art cards.

Goods on sale include new items as well as carefully selected previously released merchandise, such as foil postcards, mini sticker sets, and diorama acrylic stands.

The event is open without advance reservation for the entire period.

Exhibition Details (Osaka)

Period: June 19 (Fri) – June 28 (Sun), 2026
Venue: Namba Marui 5F
Hours: 11:00–19:00 (last entry 30 minutes before close)
Admission: Adults (junior high and older) 1,500 yen, elementary school and younger 800 yen (all tax included)

(C)2026 Miya Kazuki / TO Books.