Adult Content Warning
This work could have adult content. If you continue, you have agreed that you are willing to see such content.
-
Experiments in Love and Loyalty by i_like_to_read001
Fandoms: Harry Potter - J. K. Rowling
25 Jul 2025
Tags
Summary
Regulus Black doesn’t believe in fate. He believes in data. In control. In cause and effect. So when he quietly follows his estranged older brother to Hogwarts University under the guise of a self-designed "experiment" in detachment and observation, he tells himself it’s all very rational. After all, they haven’t spoken in years. It’s not like seeing Sirius again will affect him.
But variables are unpredictable.
Regulus forms an unlikely bond with Remus Lupin, a sharp, sardonic literature student managing a chronic illness and his own carefully guarded life. Together, they navigate late-night panic attacks, hidden radio shows, and the fragile, fierce loyalty that comes with being seen, and chosen, by someone.
Meanwhile, James Potter, golden boy of the university’s soccer team, becomes increasingly entangled in Regulus’s orbit — drawn to the quiet, prickly photographer without knowing he’s the younger Black brother.
As Sirius attempts to repair what was broken, and Remus struggles with his own boundaries, Regulus finds his clean, clinical experiment unraveling fast. Because feelings aren’t measurable. People don’t follow logic. And sometimes, the most dangerous variable is letting yourself be loved.