Oukoku wo Ura kara Shihai suru Akuyaku Kizoku no Suekko ni Tensei Shimashita ~’Aitsu wa Kyoudai no Naka de Saijaku’ no Chuu Boss Dakedo Game Chishiki de Yami Mahou wo Kiwamete Saikyou wo Mezasu~

Alphis reincarnates into the Balfont family, a notorious villain household that controls war, assassination, and espionage from behind the scenes. Looked down upon by his older brothers as a mere “mid-boss” who is “the weakest of the siblings,” Alphis possesses deep meta-knowledge from his previous life as a hardcore gamer. Realizing he has unmatched growth potential, Alphis uses his insider knowledge to master forbidden dark magic, break the game’s balance, trample the original storyline, and rise from the bottom to become the undisputed strongest force in the world!