 The business of manga production today in Japan has a prototype in the collaborative activities pioneered at Tokiwa-sō.According to Tam Bing Man (one of the acting duo), who was an assistant of Osamu Tezuka in earliest days, Tezuka first introduced this production system employing many assistants to make manga, in order to meet the deadlines of publishing in weekly manga magazines.This model of several assistants helping a main artist is still used today, providing young manga artists with training.