B-Gata Kareshi no Aishikata

From Colorful Scans:

This book contains a complete analysis of Type A, Type B, Type O, Type AB boys in particular!!

1. How to love a B blood type boyfriend:
It is said that blood type A and B are the worst combinations among all… What will happen to Kanade, a blood type A, and her blood type B boyfriend…!?

2. How to catch an A blood type guy
Miku, blood type O, confesses to her love, blood type A, and was rejected. Being a blood type O, she won’t give up that easily, together she and her friends start devising plans to catch her love. Will their plans work?

3. The true character of an O blood type guy
Aki is a volleyball player in the springtime of her life who is uninterested in love. What will happen when she is confessed to a junior? What is he truly after?

4. Countermeasure your inclination to an AB blood type guy
Rio dislikes blood type AB guys after her unpleasant experiences with type AB boyfriends. And her fellow co-worker just happens to be a type AB. What will happen between the both of them?
[LITTLE SMUT SCENE ALERT]

5. The best boyfriend
After confessing to Murakami, a cool and intellectual student council president, Noa and Murakami started going out. However Noa starts to doubt if Murakami truly loves her or is he just too kind to reject her?

6. Your body temperature when you fall in love
No one can ever guess the relationship between Koga, a popular guy in school, and Ako, a lonewolf!