They embarked on a long military expedition, in other words, they went on a 'chousei'.

A large gathering of fans was at the concert.

All of my classmates gathered.

Aoi is my favorite friend.

He drew water from the well.

He should become the leader of our generation.

We are living in a geological era called the Quaternary.

Yo is my best friend, and we always play together.

His opinion has a strong force.

He was enjoying the party among the group of students.