The Idiot, the Curse, and the Magic Academy

Nagase Tsukasa, born into a prestigious family of modern-day wizards, had immense magic power from birth but could only use magic to strengthen his physical abilities. Resigned to the fact that he couldn’t become a proper wizard, Tsukasa decided to live an ordinary life as a regular person.
However, Tsukasa wasn’t particularly bright. When applying for high school he aimed low and took the entrance exam for a backup school, but he slacked off and played around too much, resulting in him failing the exam and becoming a NEET (Not in Education, Employment, or Training).
As Tsukasa awkwardly navigated his way through the new school year, he accidentally ended up wearing a cursed bracelet that would kill him if left alone. The curse was so powerful that even his mother, a skilled curse breaker, couldn’t lift it. To remove the bracelet he had two options; cut off his arm, or use his immense magic power to break the curse. Thus Tsukasa enrolled in a modern magic academy in a parallel world to learn the curse-breaking magic he needed.
And so began Tsukasa’s carefree school life, where his only talents were his magic power and martial arts skills.