http://hatoful.wikia.com/wiki/Hatoful_Boyfriend_Wiki
I SHIT YOU NOTThere are 8 birds you can date in Hatoful Boyfriend:
Kawara Ryouta - your sickly childhood friend
Nanaki Kazuaki - your narcoleptic math teacher
Fujishiro Nageki - the quiet boy in the library
Oko San - the eccentric track team captain who's obssessed with pudding
Sakuya Le Bel Shirogane - a snotty transfer student who's an actual noble
Sakazaki Yuuya - the resident flirt who's Sakuya's older brother
Iwamine Shuu - the creepy infirmary doctor