Jack the Ripper is a little girl! In order to save his girlfriend, Colin followed an order and bombed a bus. Chased by the police to a dead end, he decided to commit suicide when one little girl showed up and saved him. Who are you? I’m Jack the Ripper, and I will be your spirit servant.
I get the feeling that Licht is the duchess's future child, who also probably got separated from his mother like Nanael was. Gosh that timeline was brutal for both of them