Opening Themes

Singer(s)	Writer	Composer	Arranger	Time	Appears in
* Nana Mizuki (also voiced Satori Uehara) Mirei Nakamura (also the voice of Math, and the supporting voice chara of Mayumi Minamoto) Mizuki Shirogane (voice of Tomiko Miyuki, and the supporting voice chara of humanized Fuel-chan)	Mikata Komachi	Mirei, Mizuki	Miki Narahashi	3:30	Metallica Paradise

Opening themes... wow I am so lazy at it tonight

Themes

Theme songs

• Metallic Circulation (episodes 1-26)
• Kimi no Tabi, Tsudzuku Dayo (episodes 27-52)
• Kashikomari Desuwa~ (episodes 52-65)

Endings

• Metropolitan Memorization (episodes 1-26)
• Sakura Chocolate (episodes 27-52)
• Nothing Else Matters (special, episodes 52-65)