All this fucking waffle about NTR and who with and why and how and whether it will be shit or not.....jfc...
Not one of you mentioned Katie
To say I'm disappointed in supposed fans of the VN...give it a damn rest. There will be a cheating route in a moment of idiocy (probably drunken)...it will be your choice, Miru will most likely find out and despite how much she loves Willi (and to correct some folk, she was a total horndog in the original too), she will retaliate or be given a free pass in return....not much different to the original VN.
Ignore someone long enough, they will wander regardless of how much they (think) they love you.