Kosen is my best friend.

Kota is my best friend.

Mr. Yoshinaga is my best friend.

His preference for music leans towards classical.

They have been in a good relationship since old times, always spending time together.

He always maintains good grades.

His popularity is rapidly increasing.

He is my most worthy opponent.

Kosyu is my best friend.

This bacteria is aerobic and can live in the presence of oxygen.