Which chords are in the song GRADUATION 〜それぞれの明日〜?

What is the right BPM for GRADUATION 〜それぞれの明日〜 by BeForU?

Which chords are part of the key in which BeForU plays GRADUATION 〜それぞれの明日〜?

When was GRADUATION 〜それぞれの明日〜 released?