He declared a false win in mahjong.

He declared a win without a legal hand in mahjong.

Mizuho is my best friend.

Kazumasa is my best friend.

Kazaha is my best friend.

This game is considered a zero-sum game.

Jiwa is my friend, and he is a very kind person.

He is learning how to use a Japanese bow.

He declared a win in mahjong.

He achieved a win in mahjong with astonishing skill.