 If you liked
Blood+
|
 ...then you might like
Canaan
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Canaan and blood+ both focus on two girls (Canaan+Alphard/Saya+Diva) who came from the same origin but live to hunt down one another. Both Canaan and Saya fight not only for revenge, but to protect the people they love. Like Diva's group who creates Delta 67, Alphard's group creates the Ua virus, both which pose a threat to humanity. The stories each focus also on a journalist who happens to witness events they shouldn't have, getting themselves involved in the action... and a partner to the journalist who has an emotional attachment to a characters fighting the antagonists (Maria+Canaan/Mao+Kai).