Natsuko Kawaguchi
川口夏子
2
Gender:Female
Sister of the Machine Gun Brothers. Natsuko was a childhood friend of Kanta and a crybaby according to him. She has not been in contact with Kanta and her brothers after leaving to work for the Oasis Government where she has risen to the rank of captain. She is a proficient handtohand combatant and the current idol of Kosuna. from Wikipedia
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