Aito won a prize in an essay contest.

Nuclear fission is a powerful process that generates energy.

He is an expert in nuclear physics.

He said 'friend' as a noun ending for me.

I want to go to California.

He looked at the bonfire and was immersed in memories.

His order was as urgent as a law, and I had to start acting immediately.

He is a person who is both academically and physically talented.

It is said that various monsters and spirits lurk in the forest.

Ryosuke is my best friend.