singing is fun!歌うのは楽しい!✩ ══════ ✩✦ intro & outro ✦✧ music: haruko-san ( https://twitter.com/NadekoSengoku__ )✧ character animation: blue_pigment ( https://instagram.com/blue_pigment )✩ ══════ ✩✦ cover credits ✦✧ vocals: shishishiena ( https://twitter.com/shishishiena )✧ mix: aida ( https://twitter.com/eytotheda )✩ ══════ ✩