届いたら手を振ってOriginal : sm36412545 Music : FLG4(Twitter : @FLG4_Music )Illust : Yuumei(Wenqing Yan)(Website : https://www.yuumeiart.com )Vocal : 此枝 詩葉 mylist/67676852 (Twitter : @utaleaf )
http://www.nicovideo.jp/watch/sm36433144