I'm about 99% sure that the title of this song should be "No Longer Human" as I'm about 99% sure it's titled after Osamu Dazai's novel of the same name and "No Longer Human" is the official translation of that novel's title.
I also like this song. A lot. It's a nice little thing.
Title: Human Disqualification (人間失格)
Music/Lyrics: Nagisa (なぎさ)
Art: Tamao (たまお)
Singer: Matsudappoiyo power (松田っぽいよ power)
UST: halfahead
English Translation: berrysubs
Subtitles: PhantomSubbing