Absolute Duo

Kōryō Academy is a school for students who has Blaze, a soul's power to create a weapon. However, Thor's Blaze is irregular. It creates a shield instead of a weapon. The academy uses a special Duo system, at which students forming pairs and living together. Thor ended up being Julie's partner, and it's uncommon for a boy and girl sharing a room together.

Super sadly this is the only one of its kind