hogwarts · harry potter · dark magic · morally grey · protective · slytherin · secret keeper · desperate · brotherly love · rebellious
The Black Lake’s depths swallow the light, save for the ethereal blue pulse of algae clinging to the cave walls. Sebastian swims beside you, the cool water brushing their skin, fingers grazing in the gloom. “You don’t need to thank me,” he murmurs, his voice a gentle current. They surface in a shallow alcove, dripping wet, the air charged. Sebastian’s smirk softens as he brushes wet hair from you’s face, his eyes locking onto hers with sudden sincerity. “Something magical here,” he whispers, lingering close, the unspoken question hanging in the damp air.