Dark path (aka Pimp/Dom) has MC drugging, training, whoring out women. That is the NTR.
Good path (aka Harem/Hero) has MC realizing what he started was wrong and trying to stop/reverse his actions.
The Sophia/Lilly side story is separate and unconnected with those 2 paths until 0.11 on Dark Path if player chooses to make Lilly very distraught by showing her a photo. The dark Sophia story goes NTR on its own.
Sophia, Lilly, Emily, Elsa, Nina, and a few others are on the Neutral path - either not fully corrupted or not corrupted at all.
Everyone on Neutral can shift harem or pimp - good or dark, based on player choices in current/future updates.
The story is only half told. Some filler scenes and other events will be inserted into the days with little or nothing to do (Day 90-100 has maybe 4-5 events total) in future updates, the same way several 0.9 and 0.10 scenes were added to early game.
NTR is controversial and open to wide interpretation. Everyone has an opinion and there are proponents and haters in equal measure, which is WHY we are doing both routes on the main storyline. To satisfy the wild misogynists who get off on sharing and being cucked, while offering more wholesome, yet dramatic fun events on the good path.