so many speed readers in this comment section that didn't even get the point of the series. it's trying to show that even the most evil "hopeless creatures" were human at one point, the kindness of the tanjirou is meant to contrast with the other demon slayers ideas
spin is obviously not a stand ability, it's like hamon. from what im guessing, gyro and johnny dont know anything about stands, like the original universe, but will learn pretty soon and hopefully get their own