Botsuraku Yotei no Kizoku dakedo, Hima datta kara Mahou wo Kiwamete Mita

A man was casually enjoying his evening drink when he suddenly found himself transported into the body of Liam, the fifth son of a noble family in another world. With plenty of free time on his hands, he decided to indulge in his lifelong fascination with magic. What started as simple practice soon turned into something much greater—he mastered elemental magic, summoned spirits, tamed powerful familiars, and even conquered the most advanced spells thought to be nearly impossible.