Additional Details Oshi no Ko Oshi no Ko is a Japanese media franchise that started as a manga series first serialized in Weekly Young Jump and was written by Aka Akasaka. The story revolves around the death of a famous Japanese idol and her two children who grow up in the entertainment industry with seperate goals. Oshi no Ko has seen quick success since it was first introduced, which has lead to a popular anime adaption and a growing fanbase.