Complex sentence: A relationship with a fellow student as a youth was discovered, and lead to Mikail being alienated from his own family, until he signed himself out as an emancipated minor, and left to settle out on his own.
Split into simpler sentences: A relationship with a fellow student as a youth was discovered, causing Mikail to be alienated from his own family. Because of this, he signed himself out as an emancipated minor, and was forced to settle out on his own.