Kyoka Jiro has the quirk, Earphone Jack, which makes her a very versatile hero in training. She can use it for reconnaissance or she can use it offensively to blast her opponents with sound waves.
Jiro's Enhance ability lets her look at the top two cards of both player's decks and rearrange the cards for each player once per turn. This allows her to set up drawing a specific card or just makes sure she won't check poorly at a bad time. At the same time she can make sure her rival does check poorly at a bad time.
Her other abilities are Responses that trigger after she plays a specific type of attack. When she plays a Charge attack she can give it plus one damage for each card in her card pool. When she plays a Weapon attack, she can give it plus one speed for each card in her card pool. Keep an eye out for Charge Weapon attacks because then she gives them bonus speed and damage!