Looks like you didnt play Chapter 2, because along that path you took (I see you got Norah's scene, which means you are along the good path)... you would have added another given your choices (Saki or Mery, provided which one you chose... IF you chose it.).
Currently, at the best route for impregnation on the free side... If you made the right choices, 5 which is along the dark path...
That's very high for most games, astronomical for one in Alpha thats only half way through production (I can confirm the number rises to 5 or 7 depending on what path you take for Chapter 3)... and... i am not going to have Serena point at people to impregnate them or run around with a turkey baster of their nut. For me, pregnancy is an extremely intimate act and that's why Serena does it the old fashioned way. Her virility is made to be 100% for that reason.
Nonetheless, thanks for trying it regardless and your thoughts on the matter/open-mindedness.