isekai cheat kaitakuki

a brief description of the manga isekai cheat kaitakuki: i lived the life of a simple idler who once died because of his laziness. but when i woke up, i found that i had become a child. it seems like i was reborn in a world of magic as the son of a lord in a distant village. in this world, now my entourage: kara is my mother, busty maid ruina and attractive amelia is my half-sister. now i have grown up and enjoy my wonderful life in a world previously unfamiliar to me, using my highest level magical abilities and knowledge from the modern world!