My little sister marries an unprincipled dark magician... Okay, maybe he's a decent guy, but his brothers are definitely unprincipled! Necromancer-misanthrope, coronavirus-womanizer and, of course, universal evil - black lord. And all three are so happy about the wedding that a thought inevitably arises, but have future relatives thought of some kind of trick? But it is not for nothing that I, Agness Erkley, am considered the best in defense against dark charms! And I will not give a sister offense, and I will defend family honor. If only the heart did not flinch and outrageous feelings intervened.