noun
Seibundo Shinkosha
A publishing company based in Tokyo. Used as a proper noun.
誠文堂新光社は東京都に本社を置く出版社です。
Seibundo Shinkosha is a publishing company headquartered in Tokyo.
The name is a combination of 誠文堂 (Seibundo) and 新光社 (Shinkosha), reflecting the merger or historical naming of the publishing company. The exact derivation is uncertain without further historical records.