@Otaku reader What I feel is that he didn't plagarize because he's given a second life and the author hasn't even thought of publishing the book in his second life so he's justified.
@Deborah how is he justified? The writer did try to get his work published but got accused of plagiarism because everyone thinks the MC is the original writer. MC feels guilty about stealing the guys story which is why he told them to buy anything the guy writes and he'll also match the price