This quiz competition is a real battle of the brains.

I will participate in the convention held in Tokyo next week.

He used his brains to the fullest to solve the problem.

I'm hosting a quiz competition with my friends tonight.

The battles of the past are different from those of today.

He is a nationally famous quiz player.

He is a character who fights bravely.

He fought bravely in that battle.

I will go to bed early today to play in a soccer match tomorrow.

Mr. Ikusa is my best friend.