Duties of an Eldest Son (смешанная)

Lily and James always planned on having a large family and so, when they encounter a newly orphaned baby, they don't hesitate to take in the boy as their own son. A year later, Lily has her own firstborn, and several more children soon follow. Everything is boisterous and loving in the Potter household until disaster strikes, and James Potter passes away. Suddenly left on her own with five children under the age of ten, Lily has to figure out how she will take care of them.
This is all old news to eleven-year-old Tom Riddle, who was sent to live with his recently discovered muggle grandparents when he was eight. He didn't think about his life with the Potters for years! He certainly didn't miss them at all!
At least not until he enrolled in Hogwarts: a school of Witchcraft and Wizardry. As a brand new outcast of Slytherin, he wonders about his childhood friend and brother, Harry Potter, and where he is in life. Does he remember Tom? Is he excited to come to Hogwarts? Will he want to reconnect when he does?
So he writes a letter and sends it out. What he gets in response, however, changes everything.