I just wanna know that can I avoid the NTR?
Depends if you're aiming for a single gal, otherwise the game will shaft you, if you show intrest in the mother, you can save her and have a scene with her you but if you pick the daughter, friendzoning her is the default response, if you save the blue-haired gal but you indulge in the blonde-haired one, you won't have her scene later on, if you choose one or any othe previous ones you'll miss a scene with the pink-haired gal and the teacher.Sure you can.
There was a scene that got changed were if you show interest in a girl you can stop someone else from having her.
There's also the lack of Harem tag.