スプライト開ける夜に (Sprite Akeru Yoru ni)

Background
"Sprite Akeru Yoru ni" is an original rock song by Tsuko featuring Nekomura Iroha, made in celebration of Iroha's birthday.

This song has entered the Hall of Fame. It is featured in the albums Iroheart feat. Nekomura Iroha (いろはぁと feat.猫村いろは) and Kimi no Mimi (キミノミミ).