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Best Trainer Choice: The Duke's Shadow (Stealth & Survival Expert)

A spy-like mentor fits perfectly because:✔ Kai is already agile → Can be trained in speed-based combat.✔ He adapts well → Can learn to outmaneuver stronger opponents.✔ Not super strong or strategic → Needs a fighting style that relies on speed, unpredictability, and quick reflexes rather than brute force or deep planning.

Trainer Concept: Raven (The Duke's Shadow)

Role: The Duke's top intelligence agent, master of stealth and assassination techniques.

Personality: Sarcastic, playful but ruthless in training.

Fighting Style: Fast strikes, unpredictable movements, and using an enemy's strength against them.

Teaching Methods:

Throws Kai into dangerous scenarios without warning (e.g., blindfolded fights, escaping traps).

Teaches dirty fighting—no honor, only survival.

Forces Kai to think on his feet rather than rely on planning.