It was an interest story. The mc's relationships with the main characters were well established and developed, allowing for good future development. The plot followed accurately the canon, and the protagonist having a harem was well establised, and is a favor point in my point of view. However, the protagonist has little to non personal development, and anything he tries always seems absurdly easy for him. I recommend you to read it if you want an isekai anime story with an overpowered protagonist who travels through the canonical plot and enjoys life with a harem. I don't recommend it if you want a protagonist who develops throughout the story, with a cunning and intelligent personality (maybe even evil), and who has 1 to 0 love interests. Also, the author has abandoned the fanfic, so unless you don't mind seeing an unfinished story, don't read it.