aoi_hibi_ni_sayonara_wo Aoi Hibi ni Sayonara wo (Goodbye to the Blue Days) is an original song by 夏 /Umi. The original illustration for the PV was made by hanako151. The song was initially uploaded on YouTube on August 14, 2021. Revision 3 by Anonymous at 2025-04-19 10:35:14.490094