He is interested in synchronic linguistics.

He is conducting research on historical kana usage.

His company is facing the risk of a hostile takeover.

He is spending a lot of time on experimental research.

He is interested in geometrical shapes.

This painting depicts a surreal landscape.

His plan was so unrealistic that no one could believe it.

He often thinks about problems from a humanitarian perspective.

That plan is too impractical, it's difficult to implement.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.