The protectors

What if Harry Potter had a twin brother named Chris? What if everyone thought Chris was the-boy-who-lived? What if they were wrong? What would happen if Harry runaway with Ginny Weasley, Luna Lovegood, Neville Longbottom, and Nikky Black because he was forgotten when he was 11. What would happen if when they ran away Harry formed a DADA group under the nickname Shadow called the Protectors and they were feared for their strength. What would happen if Hogwarts needed their help to keep the school safe. What if Harry, Ginny, Luna, Neville, and Nikky had not been seen in 4 years till now? How will everyone deal with their return ... and the news that Harry is the true boy-who-lived?