**Mina Katsuki** serves as assistant to archaeologist Koichiro Kamishiro, actively participating in global antiquities searches. Her work focuses intensely on the quest for the "Message of God" associated with the Hih Tribe. As a key member of Kamishiro's team, she travels throughout Japan investigating the Crystal Triangle artifact, facing opposition from entities including the Japanese government, CIA, KGB, and messengers of the Ten Commandments.

Mina possesses significant expertise in archaeology and is driven by fierce dedication to researching the Crystal Triangle. She spends extensive time studying its history and potential powers, her scholarly efforts centered on understanding the artifact's significance. She also demonstrates notable physical strength and combat abilities, skills she employs to defend herself and others during perilous encounters within these investigations.

Characterized by tenacity and independence, Mina maintains a persistent approach to uncovering the artifact's secrets. Her primary role within the team involves supporting Kamishiro's archaeological missions.