I work on expressing the emotions of complicated and subtle people.
The sharp and delicate feeling given by the pen, the main material, maximizes the emotional line of a person. Fine lines pile up to sharply separate complex and subtle feelings.
Most of the characters in the artwork are expressionless.
There may be sadness, joy, some pleasure, some bitterness in the expression, It may contain all these emotions. It's probably a complex, subtle feeling that can't be defined in a single word. 
I think expressionless is the most emotional expression.
I hope this expression with a lot of emotions will cheer and comfort someone.