Multiple heroines + a somewhat scummy male lead + starting out in a demonic sect + breakneck pace
Xu Yang transmigrates into a demonic sect and nearly gets drained to death by his senior sister from the start.
After activating the Dual Cultivation System, he turns the tables and drains her instead. From then on, there's no stopping him.
"Whether they're holy maidens, witches, or fairies, they're all just cultivation resources for me, Xu Yang."
