りこん利根rikon
1.

A term describing someone who possesses an innate sharpness of mind or intelligence, often implying a natural ability to understand or learn quickly.

2.

A quality reflecting a person's cleverness and aptitude from birth, signifying a natural talent for intellectual pursuits.

3.

Refers to the state of being quick-witted or astute, suggesting a level of intelligence that is instinctual rather than acquired.