He is a frog in a well, not understanding how vast the world is.

These shoes have a double sole and are very durable.

The grey matter of the brain is the central part of information processing.

He has psychopathy, making it difficult for him to understand social rules.

Amorphous substances have characteristics different from crystals.

The cytosol is the liquid part inside the cell, and many enzymatic reactions occur here.

Learning about the history of Shuyu-shi is very interesting.

Ame-no-Minakanushi is an important god in Japanese mythology.

Kazuya is my best friend.

He found a way to profit from a difficult situation like fishing at the bottom of a river.