Sirotan is a beloved character brand known for its charming, fluffy white seal mascot, Sirotan. Managed by Creative Yoko, the official website serves as a hub for fans, offering a variety of engaging content related to Sirotan. From new stories and downloadable content to exclusive merchandise, the brand showcases an extensive range of products including plush toys, keychains, and limited edition items.

Sirotan also hosts special events and collaborations, such as pop-up shops and anniversary fairs that celebrate its 25th year in 2024. Fans can look forward to themed cafes, seasonal merchandise, and collaboration items with popular characters. The brand engages its audience through fun collaborations with games and vibrant social media content, enhancing the interactive experience of being part of the Sirotan community. With an animated series featuring the voice of renowned actress Aoi Yuuki, Sirotan continues to inspire joy and creativity across all ages, making it a staple in the world of character merchandise.