Gokujou Twins

From Intercross:

1) Gokujou Twins
Morinaga Sara, 16 years old, was a normal girl... But after a traumatic experience, she became expressionless. However, the source of her trauma, the twins, who apparently became really good-looking, suddenly appears right in front of her!

2) Chocolate Sensou
Konishi has made Valentine chocolate for her secret crush Nakata-senpai but amidst giving senpai the chocolate, they accidently get handed to Makino Shinichirou. As Konishi says its not for him and hurting Makino's pride in the process, it becomes a game of trying to get her Valentine chocolate back from Makino before the end of the day.

3) Itazura Ouji
Mayuri was asked to be in charge of educating a selfish rich young boy. What will happen to her…?!

4) Katekyo to Obenkyou

5) Gokujou Twins - Mio no Jijyou