Publishes hentai titles.

Starting July 1st, 2019, Rakuraku Shuppan took over the publication of all hentai magazines previously published by Kaiohsha or Bunkasha, such as Magazine Cyberia.

https://www.doujinshi.org/browse/publisher/1078/Rakurakku-Shuppan/

NOTE: [color=red]The info above might not be accurate anymore.[/color] Rakuraku Shuppan's website is inaccessible, while the Magazine Cyberia website lists Bunkasha as their company name. Online stores like DMM FANZA, DLsite and BookLive all list Magazine Cyberia titles under Bunkasha instead of Rakuraku Shuppan.