Short answers, pulled from the story.
King Records began operating as an independent entity in the 1950s. The label originated from the Kingu magazine which ceased publication in January 1931 and ran from 1924 to 1957. It started as a division of the publishing giant Kodansha before becoming a standalone music company.
The Starchild sub-label was managed by animation producer Toshimichi Otsuki and specialized exclusively in anime music and film. On the 1st of February 2016, King Records renamed the division King Amusement Creative to reflect its evolving role. The label signed major voice actors and singers including Nana Mizuki, Mamoru Miyano, and Yui Horie.
King Custom began in the early 1960s and operated on a principle of total artistic freedom for the creator. The division provided only branding and distribution while leaving creators with full control over their content. King Custom used specific matrix numbers such as NCS for 7-inch records and NAS for LPs before discontinuing in the late 1980s.
You! Be Cool serves as the official home for the idol group AKB48 and its successor STU48. Evil Line Records was established in April 2014 to comprise artists like Momoiro Clover Z and Meg. These divisions demonstrate the label's ability to manage genres from pop to punk.
Nexus specialized in metal and underground music from Japan and overseas while Seven Seas focused on world music from international artists. Paddle Wheel Records released albums like New York Unit and Now's the Time to expand into the international market. These divisions allowed the label to support emerging talent in genres that were not yet mainstream.