gosh soo many to choose from but heres my fav in order...
1)Harima x Yakumo ~ literally no contest at all...
2)Harima x Eri x Yakumo ~ harem wanted but sparks will fly...
3)Harima x Eri ~ lovely but noisy...
Harima is the best
4)Imadori x Lala ~ comedy couple...a must have
5)Hanai x Mikoto ~ true love...cannot be ignored...