Munou Ryoku no Watashi ga Jiki Toushu no Tsugai ni Narimashita

A family hierarchy is maintained by nine clans, each with supernatural abilities meant to safeguard the region. Riko Momose was born into one of these influential branches but was found to lack any powers during a ritual meant to reveal them, leading to her being neglected by her family. Though her powers later emerge, she hides them to avoid complications. At seventeen, Ren, who is set to lead the Ichijo family, begins teaching her and becomes aware of her hidden abilities. His curiosity leads him to take an interest in her.