It was one of the pre-war buildings which survived the fire bombing of Tokyo during World War II and became part of the nucleus of the Minami Nagasaki residential area of Toshima ward.

[4] Townspeople initially imagined a monument featuring famous characters created by Tokiwa-sō residents, such as Astro Boy and Doraemon, but had negotiation troubles with copyrights.

[5] The Tokiwa-sō Project was started in 2006 to help aspiring manga artists begin their professional careers, including offering housing assistance.

Instructors from the Japan Animation and Manga College will give lessons to tenants of the house in Chūō-ku, in return for the artists working on projects led by the city government.

[8] In July 2016, the Toshima ward government announced plans to build a replica of Tokiwa-sō in Minami-Nagasaki Hanasaki Koen public park, a three-minute walk from the original, with a museum dedicated to manga and anime inside that was scheduled to open in March 2020.