Creative Yoko's beloved harp seal character Sirotan is officially making the jump to television. First introduced in 1999 as a soothing plush mascot designed around themes of comfort and warmth, the franchise has expanded over two decades into a staple of Japanese character merchandise. The original TV anime series is scheduled to begin broadcasting on October 3, 2026, airing Saturdays at 16:29 on TV Asahi, alongside weekly uploads on the show's official YouTube channel.
Production Staff and Cast Details
The animated adaptation features a prominent voice cast led by Aoi Yuki (Puella Magi Madoka Magica, The Apothecary Diaries) as the titular Sirotan. Joining the voice roster are Miyu Hanasaki as Rakko-inu, Rina Hidaka as Shell, and Riyo Iwai as Ramune.
Animation production is handled by studio Lesprit, with planning and production spearheaded by TV Asahi and Shin-Ei Animation. The core creative team includes:
- Director: Arisa Okada
- Assistant Director: Atsuko Yamamoto
- Series Composition & Script: Iku Yoshizuki
- Music Composition: Shota Kowashi
- Sound Direction: Chikako Yokota
- Sound Production: Stay Luck
Ahead of the autumn premiere, promotional campaigns across select retail outlets in Japan will feature sign boards signed by the main voice cast, allowing visitors to leave messages of support. Official merchandise tied directly to the anime's broadcast aesthetic is set to launch at physical store locations and online platforms starting mid-September.
