Ishuzoku Kyoshoujo Sextet!

A top student at an adventuring school, Touru studies abroad and reunites with his childhood friend Nikka, only to discover she is an ogre from a giant lineage. The city they visit is populated by giants, with Nikka standing 100cm taller than him. Touru's class consists only of female students, and he finds himself surrounded by them despite no intention to be. The story blends school life with elements of swordplay and magic in a setting where everything is oversized.