And in witch part do i do that choice in
John's guide. 
Do i use Yona to break them up or Man that makes them break up so i can sex her without killing
Keigo? because it looks like Man still will have to kill him to get to lay with
Reika if he is to be able to have sex to happen its either that or the no sex option if i want both followers if im not wrong? but i want to be able to have both
Reika and be able to have sex with her without killing
Keigo so how and what options and steps must i take for that to happen?