LOL there are too many so i will just do this one ... the rest with order is listed below (uh credit to whoever made this list bcos i am def not this smart xD)
Mikado x Towa
1 Warui Koto Shitai - I Want to Be Naughty!
2 Warui ko demo ii? - I'm a Bad Kid, but That's Okay Isn't It
3 Warui Yatsu Demo Ii - Is Even a Bad Boy, Good?
4 Warui Koibito ja Dame?- Can a Bad Boy be a Lover?
5 Warui Ouji Demo Suki- I Love a Prince Even If He is Naughty
Shinonome x Yukimura
1 Kirai Ja Nai Kedo - I Don't Dislike You
2 Koi Ja Nai Kedo - Isn't It Love
3 Kare Ja Nai Kedo - I'm Not Your Boyfriend
4 Sunao Ja Nai Kedo - I'm Not Honest
5 Himitsu Ja nai kedo
//★// Warui Koto Bakkashite Gomennasai : Extra of 2 pairs
Aikawa x Nanao
1 Mujihi Na Otoko - Merciless Man
2 Mujihi Na Anata - Merciless Lover
3 Mujihi Na Karada - Ruthless Body
Kousaka x Akagi
1 Shouwaru Ookami ga Koi wo Shita Rashii
Mujihi Na Otoko