Ken To Mahou To Gakureki Shakai summary:

In this life, I will live doing only what I want to do!Boku is reincarnated as "Allen", the third son of a noble family, in a different world of swords and magic, which he had longed for. However, this other world is a world where "academic background," which I was bound to in my previous life, is more important than anything else! I am no longer bound by my academic background. In this life, I will live freely and let the wind blow my way!I decided to do as I pleased, but for some reason I became the center of attention everywhere I went..?!This is the start of a painful fantasy in which you can enjoy your freedom in a different world!