Saved by A woman In a Corset and Overly Tight Trousers(Hajime Saito a New start)

In Aziu, Hajime Saito makes the choice to drink the Water of Life after his two comrades Heisuke Toudou and Souji Okita perish because they used up their life force. He fights off the Fury army that Koudou Yukimura had created with his toxic drug. After the army was destroyed Saito was at the brink of death but is then forced to drink an unknow female's demonic blood.
Saito wakes up in a field miles away from his battle with the fake demons, with no knowledge of who had taken him away from battle grounds. He then begins a search for the Female who saved him, but he only has the pull of blood to guide him and even that isn't much to go off of.

Pray tell will he find the Demonic Female or will she have been there the whole time?

I don't own the anime it belongs to its rightful owner along with pictures used in chapters