First, these are obviously not my games. These are all in Japanese, and I have yet to play through them because my laptop doesn't like when I try
to play them. I cannot help you with these games. Please do not ask me for help because I will just feel silly and pretend I know what you're talking about.
If links don't work, please tell me. Also, if you play through the games and see that I have something marked wrong, please tell me so I can fix them.
Thank you~!

Atobe wa Oujisama
This is a AtobeXSakaki game.

Buchou Taiketsu
This is more of a board game type game. If I remember right, you can pick either Atobe or Tezuka.

Love Attack
This game has Hyotei, Seigaku, and Yamabuki. I believe it's a MaleXFemale game.

Love Attack Return
This game has Hyotei, Seigaku, and Yambuki. It should also be a MaleXFemale game.

Lovely Expression
This game features Seigaku and should be FemaleXMale.

Orange Heart
This is a Hyotei game. I think it's MaleXMale, but I'm unsure

White Birthday
This is another AtobeXSakaki game.