blood (in the face); color (in the cheeks)
Refers to the visible redness or healthy color in a person's face, often used in expressions like 血の気が引く (to turn pale) or 血の気のない (pale).
The color drained from her face.
hot-bloodedness; impulsive temperament
Describes a person's passionate, impulsive, or hotheaded nature. Often used in phrases like 血の気が多い (to be hot-blooded) or 血の気の多い (impetuous).
He has a ruddy complexion.
He's so hot-blooded that he gets into fights easily.
A group of impetuous young people have gathered.
Compound of 血 (chi, 'blood') + の (possessive particle) + 気 (ke, 'spirit, mood, sign'). Literally 'sign of blood', referring to visible blood in the face or, figuratively, a spirited temperament.