So I watched this film 2 days ago and then spent the better part of yesterday obsessing over it. The ending of course drives me nuts and I hope this sequel gets made.
Just a few of my rambling thoughts on what I think a sequel to Freier Fall should be like....
I don't think Marc went after Kay after the first movie ended. If he would have the first film could have been 2 minutes longer and ended with Kay opening the door to his new apartment and seeing Marc standing there after tracking him down. What the film did show at the end was instead kind of a role reversal for Marc and how he was accepting himself and in a way becoming the new Kay.
For a sequel I see Kay as the main character this time and it's years later and he is now a Paramedic. I don't think he had it in him to keep getting transferred after the relentless homophobia he had endured. Kay is now also in a happy relationship with a man. (At least they both think that they are happy)
Marc now taking on Kay's old role transfers to a different department and runs into Kay....to both their surprise. They have a quick beer at a local bar and catch up and Marc flirts a little even though he knows Kay is in a relationship. And from there Marc goes into predatory mode like Kay in the first film knowing that Kay won't be able to resist him.