He lost his sense of smell due to damage to his olfactory nerve.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

He decided to take a leave of absence from school for health reasons.

He is active as a researcher in futurology.

His existence is my strength.

You can feel his presence.

He was arrested for arson.

I received treatment at the dentist using an anesthetic.