Honestly this story could become a masterpiece but failed midway, because Author turned vengeful MC into a typical kind Isekai MC. He even didn't kill the townspeople that burned his mother and laugh at her, MC only destroyed their home, what a good natured and kind person.
The author wasted MC personality that he had build since the beginning, and I though he is going for massacre according to the flow of the story and his personality, but no! author want a kind, caring Isekai MC, and so here you go...
Every girls in contact with MC is Yandere and Harem member go killing each other for MC affection, there even one that killed her parent as they against her relationship with MC. Yup she just blatantly chop them with OP yandere's knife.
Feared and respected by both rulers and their subject, He is too talented and smart, his strategy is vicuous and scary. many city and contry falls with a simple sentences. With a single song, a king of a certain country commit suicide. Geass can't even compare to him.