デモーニッシュ Full acoustic version by ツユ/TUYU

This video isn't mine, was extracted from the stream of TUYU

Stream:    • ツユ 重大発表 & 弾き語り枠 (超)  
Channel:    / @tuyu_official  
Group: ツユ
Composer/guitarist: ぷす
Vocal: 礼衣
Piano: ミロ