Sirotan: Story, Cast and Series Facts

Story and premise

Sirotan anime series follows the daily exploits of the titular fluffy, white harp seal and his animal friends as they lead cozy, laid-back lives. Based on the popular Japanese character brand by Creative Yoko, the show focuses on simple, everyday adventures designed to spread comfort and healing.

Series details

• Title: Sirotan
• Format: Animation
• Language: Japanese
• Genres: Comedy, Anime, Children
• Premiere date: 2026-10-03
• Status in TVmaze: Running
• Network listed by TVmaze: TV Asahi
• Network country: Japan
• Typical episode runtime: 1 minutes
• TVMaze ID: 93071
• IMDb ID: tt43665709
• TVDB ID: 480112

Cast and credited roles

• Aoi Yūki — Shirotan
• Miyuki Hanasaki — Rakkoinu
• Rina Hidaka — Sheru
• Riyo Iwai — Ramune

Seasons in the TVmaze catalogue

• Season 1: premiered 2026-10-03; final listed air date 2026-10-10.

Source and licence

Adapted from Sirotan on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.