Review of The 8th Son? Are You Kidding Me?
My opinion of this film is that it is quite boring as a typical isekai genre anime, where protagonist reincarnated in another world get super power and being wanted by many girls (Harem), there are not many adventure happening in this anime nor character development, since the mc is actually an adult before he died, so most of the personality is the same as his old self. The story itself most likely took place in an era where polygamy exist and the mc just get one girl to other from his first and official wife to other woman. The enjoyable part of this anime is thatthe character design where most of the girl is a beauty.
In short, not really recommend to watch it if you don't like harem or typical op main character that is naive. But if you want to watch it just to look at the character and do not really care about plot just try to enjoy a normal isekai anime, then just watch it. :)