There is TON of implied or outright stated NTR.
Blanc and Noir getting fucked in VIP rooms
Liter thinking about a man from decades ago
Liliweiss having sex with legendary commander
Helm whoring herself for fundraising rich ugly bastards
D.Wife getting fucked in swingers club while you go there with her
Rosanna having sex with a stabbed man
Viper being a prostitute for old men
Liveryn provides "services" to wealthy clients
Rupee is bad with money so she pleases VIP Lupins and fat old men for money constantly
Privaty, Ade, Soda I'm not comfortable with girls calling other men master
Shifty fooling around with Andersen constantly
many such cases
Helm even says about the fundraisers where she has to entertain male guests, the fact she doesn't like it doesn't change it is NTR against the player. she also couldn't enjoy the summer event because of her PTSD from fundraisers