She likes tuning the koto in the most common method, hirachoshi, the best.

Ryohei is my best friend.

Teppei is my best friend.

A straight angle is 180 degrees.

I watched the Olympics in Pyeongchang.

I watched the Olympics in Pyeongchang.

There were many people gathering, and the park was bustling.

This book is very thick.

Jun is my best friend.

I'm always moved by Atsushi's kindness.