The issue with Infinite Stratos is that it’s part of a genre of near exact plot copies. It’s almost always a dude who is accepted into a magic/scifi academy and catches the attention of the flame princess and builds a harem. The MC is always somehow a special unique case.

Infinite Stratos
Chivalry of a Failed Knight
Academy Battle City Asterisk
Undefeated Bahamut Chronicle
The Testament of Sister New Devil
Hybrid x Heart Magias Academy Ataraxia
The Demon Sword Master of Excalibur Academy
Absolute Duo
Blade Dance of the Elementalers
Freezing
Myriad Colors Phantom World
World Break: Aria of Curse for a Holy Swordsman
Hundred

The list goes on.