Is it possible to get a normal good ending?

Let's say for Katsura Kotonoha and Kiyoura Setsuna - can you get a good/happy ending where they arent't raped and don't cheat on you (and you don't cheat)? What about the other heroines can they get a normal ending? Even if you get a normal ending for one heroine will the others get a bad ending in that one?