初恋ダイヤモンド
-Description
Nanamiya Tenka is an introverted high school student who was one day transported to another world by a mysterious ring! There she met, Julius, a blonde haired and blue eyed prince. While traveling with him, she became touched by his kindness and began to think of changing herself...!? Every person who's in love is a 100% pure diamond! https://www.cmoa.jp/title/227590/