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bowlfish
Since: May, 2018

Looking for a manga about a deliquent-looking boy interacting with a short, long-haired girl.
Notable things I remember:
The girl is very good at crane games and gives her prizes to the boy which he uses to surround his bed so they watch him while they sleep. Later he adds a life-sized statue of the girl to the watchers.
The girl has a female friend who's huge but very timid so she always hides just out of sight.
The girl has an elementary school brother who looks exactly like her.
The boy always thinks the girl is doing something outlandish when she's actually doing something normal. The one time he turned out to be right she actually was participating in a big beyblade tournament.