He tends to regard all people as the same.

They are treating all students as one.

I like to hang out with friends who have the same hobbies.

I will love you forever.

Until when will you stay in Japan?

When will you go to Japan?

When are you going to Japan?

Since when did you start studying Japanese?

He will help at any time.

The police believe that all these incidents were committed by the same criminal.