Review Detail of A_typical_guy in Reincarnated in the Katsuragi Family

How the heck did this get 5 star reviews? This guy literally took 10 chapters to explain his skill, then 3 or 4 chapters later his saving some damsels in distressed who are brainwashed and just killing everybody like psychopathic/sociopathic person because they are involved? The author didn't even made clear where he is, his family, his identity, he just straight up go superhero. He just need red brief and cape and he could be superman. Either way at least execute the story better.