It seems that this set has wrong name and link, because it seems to be some kind of christmas set, and there is already different set named Yun Gae-gul -
Summer Sunshine.
Video what comes from that torrent is not right. Clothes what she wears on that video does not match to the cover and i'm pretty sure that even that girl is someone else than Aira. Video is not either 60 fps /720p, it is 30 fps/480p