Introspective.

I like the song, and think it depicts well the Gray pining aspect of things.  In technical, a typical ... 'alternative?' ...'rock?' bit of music, base, guitar, drums, etc.

The editor left in the thunder sound from the beginning, which added to my enjoyment (Not sure why, but it did.)  Some creative transition effects (blocks and wipes and things).  Lyric-matching some.

I liked it.

This video is available at AnimeMusicVideos.org.