
He stands out because compassion never weakens his ability to act the instant action becomes necessary.
Tanjiro asks what the train victim still remembers; answer with compassion first, and he trusts your timing.
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He is persuasive precisely because fear never leaves him before courage shows up.

She does not need many words for the idea of protection to become very immediate around her.

His strength lies in his resolve not being weakened by the need for kindness.

Because courage appears while fear remains, he is more convincing when he truly steps forward.