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🎉 Karasu-OS will remain online! More info.

Color Party Time

Nightmare

24 February 2021 – 9 March 2021

Duration: 13 days

Rewards

Concealed in Color

Lucifer's Color Night

Romance for You!

Which Color Suits Me?

Killer Otaku Moves

Demon Cards

Karasu OS is a web resource created by fans. Creators of the website are not in any way affiliated with NTT Solmare Corporation. All characters, illustrations, and game content are copyrighted work exclusively belonging to NTT Solmare Corporation.

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