In Nobis (гет)

Young Hara’s hand was still outstretched reaching for him. Her lip quivered for just a moment. He had no idea what possessed him to indulge the child’s wish to touch him, likely just trying to gain some comfortable interaction from the only adult in the room, but he reached out to the child and she grasped one of his fingers tightly. It felt like lightning had hit him. His knees went weak and his magical core felt as though it was on fire he felt his magic going haywire and something shatter within him, and some foreign magic latch on. The little girl screamed in pain and fell back down into her crib. Voldemort thought that the final blow was dealt and that he was moments from death before he felt the cracks of his core slowly start to knit back together, the pain in his body subsided then disappeared altogether. There was one tiny prickle of pain left and a scorch mark on the left side of his chest.
Eventual Romance between Hara Potter and Voldemort/Tom Riddle. In the future... Like wayyyy into the future. We will get there.
Voldemort finds himself connected to Hara and takes over as her dark guardian angel of sorts. Dumbledore wants her for his own "for the greater good" purposes.