I wake up at eight o'clock every day.

He traveled the eight corners of the earth and gained a lot of experience.

I love Yatsuhashi.

We have been working on this project for eight months.

Sohachi is my best friend.

Mr. Hachinami is my best friend.

Mr. Hachina is my friend.

Yashiro is my best friend.

My younger sister is eighteen years old.

My grandfather is already eighty years old.