The song "Coin Locker Baby" is part of a three song trilogy, alongside SIU and Rebirth by the artist
Maretu. "Sayōnara sayōnara coin locker baby" means "goodbye goodbye coin locker baby" and the song is about a mother who left their baby in a coin locker. People in Japan did this when abortion wasn't an option. The bangs are the mother slamming the locker shut and the last like 40 seconds are the baby dying.
