Kyousenshi na Mob, Mujikaku ni Honpen wo Hakai suru

Albert, the youngest son of a family of noble warriors called the Falconers, has a secret—he's been reincarnated into the world of a video game! Unfortunately, his memories of the game are hazy, and he's merely a nameless background character who shouldn't have any effect on the world at all. As Al begins to question his own existence, he enrolls in the Radford Royal Academy of Magic, where he's about to find out he has more influence on his new world than he ever could have imagined!

(Source: Seven Seas Entertainment)