Hikikomari Kyuuketsuki no Monmon

Terakomari Gandesblood has spent nearly three years proudly living as a shut-in. Though born into a noble vampire family, she cannot use magic properly, refuses to drink blood, and has no desire to follow her military ancestors. A misunderstanding with her father nevertheless gets her appointed as one of the Seven Crimson Lords, placing her in command of soldiers who respect only overwhelming strength. With the help of her devoted maid Villhaze, Komari creates the image of a terrifying warlord and even promises her troops world conquest while desperately hiding how powerless she believes herself to be. The performance grows dangerous when someone from her past returns with a genuine intention to kill her, forcing a girl who built her life around hiding to confront a world that refuses to leave her alone.