THE BLUE HEARTS
The opening and closing songs are both covers of tracks from seminal Japanese punk rock band The Blue Hearts, "Hito ni Yasashiku" and "Tsuki no Bakugekiki" respectively. Several of the episodes share titles with tracks by The Blue Hearts including "Kitai Hazure no Hito", "Hoshi o Kudasai" and "Yoru no Tōzokudan".