Renge was born in Kansai to her unnamed mother and grew up not well-off. To make her mother's life easier, she strove to become an alchemist with a dream to create gold through the art. She eventually joined the Academy and became classmates with Rinne. Due to Renge's upbringing, she has a strong desire for money and was willing to sell the Chemies she has just to make an extra buck. She and her classmate Sabimaru have known each other for a long time and they have a straight & funny man dynamic