He should stop his self-destructive behavior.

The robot initiated the self-destruction program.

My friend lives in Yokohama.

Kōko is my best friend.

Mr. Kodera is my best friend.

The cause of his lateness was a train delay.

Riboflavin is a type of vitamin B2, which is a nutrient necessary for health.

I always use binchotan charcoal when I grill meat.

I always use binchotan charcoal when I grill meat.

He is a jack of all trades, he can do anything, but there's nothing he's particularly good at.