À propos
O/A is a manga series by 渡会けいじ, known from ヤングエース (KADOKAWA).
The story is still moving — catch the latest chapter for “what’s happening now,” or binge volumes from the start.
If you’re new to O/A, start with the synopsis, then either jump to the latest chapter window or open volume 1.
O/A latest chapters, spoilers, and volume guides live on this page.