This is a FCS-only head mold. It was released on June 8, 2019 for the Summer update to the Tenshi no Sato FCS. This head is currently only available at Tenshi no Sato. It had limited releases along with the availability of sungligh color resin at Tenshi no Mado from June 18th through August 28th, 2022 and June 17th through August 27th, 2023.
Please click on the individual thumbnails to see the pictures full-sized.