A Livid Lady's Guide to Getting Even: How I Crushed My Homeland with My Mighty Grimoires - Vol. 3 Ch. 16

[MangaDex]

 

[KitRagnell]

Is he in a dream? Or has he lost control of his body?

 

[SparkySWE]

Did suspect that something was wrong. Didn't expect that tho. Brutal!

 

[Caribou31]

I hope it's a dream, it will be difficult to follow a protagonist who make a man kill her little sister.