Included with Key Set 2021. First released during VISUAL ARTS WINTER FES 2021. Later available at Comic Market 99. Runa Mizutani (NanosizeMir), Aoi Tada Arranger Yuichiro Tsukagoshi (NanosizeMir), Meis Clauson, Hideaki Kuroda, kidlit, a2c (MintJam), Ryo Mizutsuki, okka, 大橋柊平