The twelve seals of the zodiac. Start the camera and hold a shape — the matching card lights up live, so the model itself tells you when you have it. Descriptions are a starting point; the recognizer is the referee.

Pick a jutsu, weave its chain against the clock. The timer starts on your first committed seal and grades you on time per transition — personal bests are kept in this browser. Break the chain and you restart from the top.

Weave a full chain to cast. Longer chains hit harder — the reward for clean, fast weaving. Break a chain mid-combo and you eat a 0.7s stun, which is the real cost of a misfire. Play locally in two tabs, or duel a stranger peer-to-peer.

The commitment layer, exposed. A cast fires on a short confident plateau — not a slow hold — which is what reconciles weaving speed with misfire safety. Every threshold below is live; drag one and watch fire accuracy and commit latency move against each other. Set an expected sign to score yourself honestly.