He thinks his knowledge is omnipotent.

Noukou is my best friend.

There is no ergative in Japanese.

He always proceeds with things in an easy-going manner.

He always proceeds with things in an easy-going manner.

He can master classical Japanese.

He used his remarkable ability to help people.

Recently, Korean Wave dramas are very popular.

Recently, due to the influence of the Korean Wave, Korean music and dramas are very popular.

This area has active convection, causing frequent thunderstorms.