Ai ga Mie Hajimetara

Includes the three short stories: Vice, B.B., Kyouto Ren'ai Bojou (京都恋愛慕情).

1. Vice.
Katsuyuki is a vampire detective who is a big fan of beautiful women. One day he saves girl Azusa from nanpa guys and she clings to him temporarily as she has nowhere to go. At the same time Katsuyuki is offered a new case by a hot babe. Even thought the case looks like an easy one, there is something fishy about it...

2. B.B.
Bridal breaker is the profession of Shin. He specializes in ruining other people weddings for money. There is little demand for his specialization and he accumulated quite a debt. Finally a new job shows up and he dives into a whirlwind of complex human relations during the wedding ceremony.

3. Kyoto love affair.
Kyoto, 2052. Kagura is a demon hunter serving in the Department of the Temple government, Demon specialization Section 1. She's in love with a noble Hayato, but his social position is too high for her to have any prospects for him. One day Miyano, one of shrine maidens to goddess Amaterasu, telephones Kagura and offers an opportunity to participate in a divine test with a chance of becoming a goddess as an outcome. Kagura grasps the chance immediately as it's her chance to gain superior social status and confess her feelings to beloved Hayato!

[From vndbreview]