Sumireko Murasakizuka
The only daughter of a karate dojo. She is very serious about karate and never skips training. She is also an upstanding and straightforward person. She and Tatsuro were childhood friends and are now lovers. They often trained together as children. She is strong enough to overpower most men with her karate skills. However, this leads her to believe that she has no feminine charm.
She likes to make clothes and plushies in her free time. She's into strong, manly men