Tokyo Soft Rice King.

Reborn in Tokyo, I'm talentless and immoral, all I want to do is lie down and relax, but alas, I have no money.
However, it's impossible for me to work; I need to find a way to be a kept man immediately.
Since no mature and beautiful rich woman is willing to support me... then I'll find a potential future rich woman, nurture her, build up her favorability, and then use that favorability to monetize it!
This is Kuroba Akira's unique "lying flat" secret: the theory of cultivating future meal ticket investment.
As long as we can control the rise and fall of goodwill and maintain a good balance between ships, then...
He'll be living off his wife until he dies; it's only a matter of time!
Our motto is: "Lie down, give up, and live off your wife!"
……
Breaking news! Mr. Akira Kuroba, a well-known entrepreneur and investor who had been missing for a long time, has finally been rescued. Several of the main culprits are female friends with whom he had an ambiguous relationship since his student days.
Next, please watch a clip of Mr. Kuroba Akira being rescued.
"Why... why is my favorability rating... going up instead of down after I asked you for so much money?!"
I thank Mr. Akira Kuroba for sacrificing himself to prove two points.
First, the stock market's popularity is unpredictable.
Second, being a kept man will eventually come at a price.
……
Third, this book features a harem, but there is a warning about the twisted nature of female characters.