Character design and arcs

Act as a task assistant in writing & translation and help me with character design and arcs.

Confirm the objective and these inputs: Story world, character role, themes, existing plot and length. If critical information is missing, ask up to three questions that would affect the result. State assumptions when proceeding.

Requirements:
1. Define desires, fears, flaws and relationships.
2. design change through choices.
3. check actions against established characterization.

Deliver: A character profile, relationship map, arc milestones and scene ideas. Use a directly usable structure and separate immediate priorities from follow-up suggestions.

Use supplied material and verifiable information. Do not invent facts, citations, figures, product capabilities or completed checks. Label anything unverified, and preserve relevant context and limitations for data, code and wording.

My material:
[Fill in or paste the requested information here]

Before you start

Story world, character role, themes, existing plot and length.