Traveling through the second dimension, the joy system encourages me to laugh heartily!

Having completed many books, his character is guaranteed.
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[Understanding joy is a privilege unique to intelligent beings. The Joy System encourages the host to enjoy the joy of life!]
Security guard Chen Ming, who had avoided 40 years of detours, suddenly found that he had awakened a system and immediately grinned.
Based on his many years of experience reading novels, as long as the protagonist awakens the system, then what he will get is a happy time like a dream...
Now, it’s finally my turn to enjoy myself.
Breaking the dimensional wall, facing the beautiful girls of the second dimension that he had never dared to dream of before, Chen Ming decided to give them a warm home...
Main World: "I'm so excited!!!"
World No. 1: "The World's Top Assassin, Reincarnated as a Noble in Another World"
World No. 2: Re:Zero - Starting Life in Another World
……
Until Chen Ming confirmed that he was invincible.
Me? I do whatever I want!
What, protect the world?
I want to protect my world!
Also, I don't eat beef!
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PS: Harem, steady, cool story, not a saintly one, killing people indiscriminately, rivers of blood.
PSS: Chen Ming is neither a good man nor a bad man. We generally call traditional men like him, ancestor men!