What is the name of the long novel of about the reckless girl who kept in challenging me as it was a short story
転生者である私に挑んでくる無謀で有望な少女の話 転生者の私に挑んでくる無謀で有望な少女の話, the same name as the short story. There isn't any translation yet though, but you can buy the LN here or here. You can also read the trial for volume 1 here.