A followup tweet added, “A commemorative illustration by Oguchi has been released. The production team is working hard to be able to show everyone the sights beyond this ‘door.'”
Then, in a message on the series’ official blog, producer Takuya Yamanaka said, “And finally, there’s the illustration we prepared for the fourth anniversary… I’m not going to say much about that. The production team will continue to work hard to be able to show you new sights as we head towards the fifth anniversary, so please give us your support.”
In related developments:
- Ostinato OD – FuRyu announced that it will release “Ostinato OD,” a second self-cover collection including the three songs added in The Caligula Effect: Overdose, which are sung by Lucid (voiced by Chiharu Sawashiro), Stork (voiced by Shugo Nakamura), and Onboro (voiced by Himika Akaneya). Details including a release date will be announced at a later date.
- Stage Play – The Caligula Effect series will make its theater debut in January 2021 in Japan with a The Caligula Effect: Overdose stage play. Details including cast members will be announced at a later date.