Hitomi is the series' main protagonist and the actual thief of the operation—the one who earns the "Cat's Eye" title. She's the second daughter of Michael Heinz, and she's genuinely warm, loyal, and caring toward her sisters and Toshio. That said, her temper is quick to ignite, and she's known for snapping at people she's close to, especially Toshio. The two argue constantly, though Hitomi typically regrets it afterward and apologizes.
She's an exceptional athlete with a genuinely impressive skill set. Like her sister Rui, she's accomplished at horseback riding, safe cracking, and just about anything physical you can think of. She's a talented gymnast who executes complex acrobatic moves without breaking a sweat, and she can slip out of handcuffs and restraints easily. She's apparently ambidextrous and double-jointed, which certainly helps with the escape artist routine.
When it comes to fighting, Hitomi's resume is extensive—she's trained in judo, boxing, karate, kendo, and aikido, with clear proficiency in at least the first three. She's also a master of disguise and picks up languages naturally, another skill she shares with Rui. Basically, she's criminally talented in every way that matters for the heist lifestyle.
Content compiled by AnimeList.moe from publicly available sources.