This is a FCS-only head mold. The Full Choice Handbook: 2016 by Volks shows the head mold with 20mm eyes. It has a very anime styled aesthetic, and the larger eye size is due to this. It hearkens back to sculpts from Volks in the early 2000's. It was released in Japan in June 2016 at Tenshi no Sato. It was released at Tenshi no Mado and Sumika locations on September 18th, 2021.
Please click on the individual thumbnails to see the pictures full-sized.