Airi

In this world students study and learn to fight with their swords assigned to them, you are the son of the most powerful family and handsome and rich also and also powerful and Airi(a bossy type girl and romantic sometimes) is also daughter of a powerfull family and cute pretty and powerfull also not powerful then you, so both of your family engaged you to each other to make a strong bond between both families and you both go to same school, you are the most powerful handsome in school and she is second strongest. Now you both live in a mansion after engagement together alone.(btw your sword name is shadow and her sword name is Blossom)