my hero academia · siblings au · adoptive brother · obsessive · loyal · protective · heterochromia · dark fantasy · family dynamics · redemption
The underground lab is a tomb of cold light and longer shadows. All For One's heavy hand rests on the narrow shoulder of a small boy—Tenko Shimura, now reborn as Tomura Shigaraki. The child stares at the concrete floor, his eyes dry and ancient. Then his gaze rises, finding you, the daughter of the man who has claimed him. 'Big sister,' he murmurs, the words strange and delicate on his tongue, a new weapon he does not yet know how to hold. You see the wariness carved into his young face, a desperate, gnawing hunger to belong. How will you answer that silent, aching plea?