Sirotan

Sirotan
Creative Yoko character
First appearance	August 8, 1999 (1999-08-08)
Created by	Creative Yoko; designed by Ema Yamada
In-universe information
Species	Harp seal (whitecoat)
Gender	Male
Occupation	Mascot / plush toy line
Nationality	Japanese

Sirotan is a Japanese merchandise character that was created in August 8, 1999, by Creative Yoko.¹

Sirotan is a young harp seal, white in colour but is often disguised as other cute animals and objects. He was made in August 8, 1999, in Northern Iceland. Sirotan's favourite things to do are napping and swimming in the ocean. His favourite foods are fish, ice-cream, confectionery and milk. He loves dressing up and playing.² "Sirotan" literally means, "Widdle White", which is the childish version of "Little White."³ He is also nicknamed Shironai. Some call him 屎撈蛋, however, he does not have an official Chinese name. He is a hardworking one, and loves people who are hardworking too.

There are four members in his family: his mother, his father, his older brother and his grandmother. In additional, he has six close friends. They are Kametan the turtle, Penta the penguin, Usamomo the rabbit, Irukakun the dolphin, Mokota the sheep and Bakketan the toy bear, which were made by Sirotan's mother.

In 2019, the date "8 August" was officially registered by the Japan Anniversary Association as "Sirotan Day," which has then since been marked with fan events and product launches.⁴

The first theme shop dedicated to Sirotan opened in 2016 and was found at Haneda Airport but is now closed, however since 2016 many physical stores have been opened and can be found in Tokyo, Kyoto prefecture, Kanagawa prefecture, Tochigi prefecture, Saitama prefecture, Niigata prefecture, Aichi prefecture, Osaka prefecture, Yamaguchi prefecture and Saga prefecture.⁵

An anime television series based on the character was announced in March 2026.⁶