1x1 - I'm a Noble on the Brink of Ruin, So I Might as Well Try Mastering Magic

Liam is an office worker in another world and does not know how he got there. In this new realm, he takes over the body of Liam, the fifth son of a noble family that's about to lose its status, although that doesn't concern him. In this world, magic exists, and he can learn to wield it.