Question: is mikkel his own father?
Answer: Michael Kahnwald (born as Mikkel Nielsen) was the youngest son of Ulrich and Katharina Nielsen, and brother of Martha and Magnus. He traveled back in time to 1986 at the age of 11, was adopted by Ines Kahnwald and later married Hannah Krüger, with whom he fathered Jonas. He committed suicide and started Jonas' journey.