[How it happened!]

[Adrian's POV!]

While others were busy doing their own things, I talked with the prince about a couple of questions that would solidify the direction of my plans. And much to my delight, the prince solved more than 70% of my queries as he answered everything honestly.

Though for the most part it was him getting a bottle of [Mana Blood], in exchange for each honest answer he gave me. 

The story was pretty simple.

The vampire's power increases to at least 10 times at night in comparison to the day. It's not that they can't travel during the day, or the sunlight would kill them, as the usual myth goes, but more around the fact that the sun weakens their blood regeneration, putting a huge limit on their physical power. 

If at night, they could regenerate even severed limbs, in the morning even a single scratch would take hours to heal. The severity was this bad.