How Could a Debauched Young Master Be a Silver Dragon Princess?

How many times in life do you get an absolutely explosive opening?

Being reincarnated into another world was fun.
Becoming the debauched young master of a ducal house was also fun.

Putting those two fun things together should’ve meant double the happiness.
Even becoming the villainous young master, Lorin, was something he could accept with a smile.
At worst, he could just avoid the heroines, right?

But why had he turned into a soft and adorable silver dragon loli…
And why did the female lead from the original owner’s previous life…