Umi is my best friend.

He found the sea on an old map.

He found the sea on an old map.

I love swimming at the seashore.

I often go to the sea on weekends.

His research covers a wide range of topics.

It is important for each person to fulfill their role.

He acted according to my instructions one by one.

His first choice of school is the University of Tokyo.

Watching a movie alone is enjoyable.