New Century Tile Warrior

As an online writer, Lei Ye had heard of the golden finger that the more descendants he had, the stronger the protagonist would be. Unexpectedly, when it was his turn to travel through time, the golden finger he got was exactly the opposite.
What does it mean that the more mothers you have, the stronger you are?
So while Lei Ye regretted blocking the bridge every day in the past, he used his rich galgame experience to get acquainted with a girl or young woman to become his mother.
At the same time, in order to obtain enough funds, Lei Ye did not give up his old profession. He would still write stories and entrust the big library to sell them after taking risks.
In this way, everything went smoothly. Five years passed quickly, and the preliminary preparations for the crusade against the Demon King were gradually completed.
Until one day, a mysterious female fan came to the door...