The very first build of the game had a drama centered NTR situation that takes place before the start of the story. The MC was Carla's shoulder to cry on (stringing him along) while she fucked the other dude, once she was pregnant, she dumped the MC. If I remember correctly the MC was implied to have never fucked her in the original first release. Now at the time of the story during the project presentation the MC caught the other dude cheating on Carla with a blond girl from the staff (that was meant to be a LI for the MC) and he was all mortified about saving Carla from the cheater.
The MC was such a loser that the dev retconned the first chapter, but he made a convoluted mess about how the child, may or may not be the MC's child and the blond staff member, I think (?) got a twin that will be the new LI.
The real problem with this VN is that the MC is a wimpy loser and at times he gives cuck vives even if you made the right choices.