Iron Rust and 1000 Carats
鉄錆と1000カラット / Tetsusabi to 1000 Carat / Iron Rust and 1000 ct. / Iron Rust and 1000 Carat / Tetsu Sabi to 1000 Carat / Nishuume Cheat no Tensei Madoushi - Saikyou ga 1000-nengo ni Tensei Shitara, Jinsei Yoyuu Sugimashita / Nishuume Cheat no Tensei Madoushi: Saikyou ga 1000-nengo ni Tensei Shitara / Jinsei Yoyuu Sugimashita / Second-Life Cheat Mage: Life Turned Out to Be Easy after Being Reincarnated 1,000 Years into the Future / The Second Life Cheat Reincarnation Mage: If the Strongest Reincarnated After 1000 Years / Life Would Be Too Easy / 二周目チートの転生魔導士 ~最強が1000年後に転生したら、人生余裕すぎました~ / 二周目作弊的轉生魔導士 / 二周目作弊的转生魔导士 / 두 번째 치트의 전생 마도사 ~최강이 1000년 후에 환생했더니 / 인생 너무 여유로웠습니다~,

In a world where rare gemstones in the eyes grant extraordinary powers, the gifted are known as Gem Lords. They reside in a vast mansion called the Jewel Box, using their abilities to fulfill people’s wishes. Yuni, whose eyes are a dull iron-rust color, is dismissed as useless until she meets Alekrea, a beautiful and feared young man known as the Jewel Killer. Together, Yuni and Alekrea begin uncovering secrets hidden within the Jewel Box. Yuni does not know that she may one day change the world. Their story is a buddy-and-romance fantasy set in a mysterious world of gems and lies.