This is the same headmold as standard relase Mel. It was released in Japan on October 7, 2018 as a Tenshi no Sato exclusive. It had a limited Tenshi no Mado release from June 19th through August 29th, 2021. It had a second limited Mado release from October 6th through December 25th, 2023.
Please click on the individual thumbnails to see the pictures full-sized.