His handwriting is very unique, and can be recognized immediately.

Graphology is the study of determining a person's character or condition from their handwriting.

Graphology is a study that interprets a person's character and abilities from their handwriting.

His character is very kind.

He is deeply interested in academic studies.

He is studying at the library every day.

I'm worried about his health condition.

Gakuto is my best friend.

He is known as a person with learning.

That person is my friend.