This is a FCS-only head mold. It was released at Tenshi no Sato in June 2014. The Full Choice Handbook: 2016 by Volks shows the head mold with 16mm eyes. This was a Sato exclusive. On September 15, 2018 this head was made avaiable at all Sumika locations. It was then made a Tenshi and Sato exclusive again on October 30th, 2022. It will be discontinued on January 30th, 2024.
Please click on the individual thumbnails to see the pictures full-sized.