窺 is a kanji that is not found in surnames.

Aki took a nap.

Aki likes making sweets.

Hollyhock is my favorite flower.

A hungry wolf came out of the forest.

Understanding the concept of 'Ha-line conversion sounds' is important in learning Japanese.

He mastered the technique of grafting grapevines.

She had a beautiful headdress on her head.

He couldn't hide his remorse for the failure.

If you rephrase that complex theory in simpler terms, it's just common sense.