Mitsugu discovers that different types of blood affect Mai's personality. Mai ends up drunk and goes on a night-time romp.

The fathers of Mai and Mitsugu, a vampire and a vampire hunter, pay a visit to see their daughters.

The nurse hangs on to a special bottle of blood from her youth. Everyone wants to know the history of that bottle.

The Blood Donation club meets Mai's fiancée, the undead monster Franken Yasohachi.

The Blood Donation Club heads to a isolated island for a summer holiday. However, a fish monster is on the island and Nami goes missing.