She's a university student who basically coasts through life acting like a delinquent and doing almost no actual work. When someone calls her out on her behavior, she hits back with random trivia questions—the kind designed to stump people. Higashida's one of the rare people who can actually answer them, which catches her off guard every time.
She's got a daughter she mostly leaves with her mom, who's absolutely obsessed with spoiling her granddaughter. Interestingly, the kid seems to have inherited the family brains—smart just like her mother.
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