Boku no Hero Academia 2nd Season, Black Clover Recommendations
Black Clover has its own rivalry but different because they don't learn/go to school and the rival (yuno) believes he's the only fit one to be a rival with asta.
Because in both series the MC starts with weak and get stronger
Both have 100+ episodes
Moves to an academy
Every one underestimate them
Cool badass moments
Shocking everyone with their power