Individual character card pages with filters for source, rarity, attribute, and your owned status.


We recently added event data! To edit, go to the specific event page and click on the edit button while logged in.

Go to page »

Surprise Guest

Everyone's best surprise guest combo is right here! With easy way to switch between characters and guides for gifts :)


We added icon pages for when you need a new profile picture! Feel free to suggest new features for these pages.


A few tools to help you with your tasks in Obey Me! Help you track your devil's tree progress and a few calculators.


A few other miscellaneous pages for fun. Find out which card is most liked by our users.

What's this? is named after Karasu Operating System on DDD. It started as a website for you to record and share your cards online. But now it has many more features such as surprise guest guides, pop quiz calculators, and many other new tools! It's built by fans on a completely voluntary basis. We are not associated in any way with our official developers (great job they did making the game 👏).


Need help?

How does it work?

You can browse the card gallery without creating an account.

To track your cards online you'll need to create an account. Log in to your account and head to Gallery. Click "Manage Collection" and select your cards.

Pressing Select All with filters applied will select only the cards that are displayed.

After saving you can check your cards in My collection. You can copy the link to that page and share it with other players, they'll be able to see your cards as well.