Complex sentence: For episodes 1 to 12, the ending theme song "Garasu no Haiwei" or Glass Highway was performed by doa with the current ending theme song "Yume no Hitotsu" by GARNET CROW.
Split into simpler sentences: For episodes 1 to 12, the ending theme song "Garasu no Haiwei" or Glass Highway was performed by doa. The current ending theme song "Yume no Hitotsu" was performed by GARNET CROW.