Competition for Blood

These Demons appear as regular enemies in Kasumigaseki, in the corridor and room before reaching the Counter-Demon Base. They're pretty easy to dispatch so you shouldn't have issues collecting the blood. Deliver them to the Hunter Association to receive your reward.

You don't have to manually walk all the way there in case you want to get your reward(s). There's a terminal in the counter-demon base itself. However, before you can activate it, you'll have to defeat the demon and clear the domain it created inside the terminal room.