The Anime Lad
Harutora was born into a family of onmyouji celebrated for occult mastery. He did not inherit their magical abilities and expects an ordinary life instead. That arrangement changes when a girl from his past returns. Tokyo Ravens begins at the moment family tradition and unfinished history reach into a future Harutora thought had already been decided.
Super Eyepatch Fox
Belong to a famous onmyouji family. Inherit none of its magic. Accept a normal future, then watch a girl from the past change its direction. Tokyo Ravens uses Harutora's lack of power as the starting point for a modern school story shaped by occult family expectations and a life that refuses to stay ordinary.
Gigguku
Harutora comes from a family known for magic and somehow gets none of it. That is already a fantastic inconvenience. He has settled for normal life when a girl from his past changes the whole direction. I love a supernatural setup where the first problem is not secret power, but the very public fact that everybody expected more.
Father's Basement
A boy from a powerful occult family failing to inherit magic is a familiar route into urban fantasy. The family being onmyouji helps sharpen the pressure, while Harutora's acceptance of normal life keeps him from beginning as another eager chosen student. The interesting disruption comes when his past refuses that quiet conclusion.