Jewel made entirely by hand by the Italian craftsman Gianmarco Fontana. Ring made of 925 Silver depicting Shin by Dorohedoro, which is part of the “OTAKU” collection.

Shin is a tall man with a muscular build, short blond hair, blue eyes and pale skin. He is often seen in a formal dress while wearing a backward heart-shaped mask. Use glasses when not wearing the mask. He has stitches running down his arms and hands from his surgery to gain magical powers. He usually uses a carpenter's hammer to fight, which is his weapon of choice in addition to his magic.
Shin has a young looking face with no facial hair, but with a noticeable forehead, which wasn't very obvious at the beginning of the manga, although it has become more prominent with the advancement in the art style. She also had spiky hair, but especially in later chapters, her hair is closer to a more realistic or at least shorter hairstyle.
As a teenager, Shin wore her then very long hair styled into a ponytail. At that time in his life, he wasn't wearing glasses yet, so it can be assumed that Shin's vision has progressively worsened over time since then.