itch.io

I dunno how to screencap Renpy, but I think what you are looking for is "Easy beats (default)" 
In the Main Menu, go to Option. At the bottom of the Screen, you will see "Radio" and 3 options. 

And if this isn't what you are referring too, then I'm outta ideas. I personally think Phoenix is right, but this is the only other answer I can think of. 

Hey bro,i ve found the name of the music which name is The Beauty of Love and Ive tried seachring it on Internet but failed. It looks like  self-made music. you can find it by the game path ：/Harem_Hotel-v0.15-pc/game/The Beauty of Love.wav, and i can share you if necessary

Finally some clarification, thank you sir :)

Hey, what version is this?  That’s not what my title screen looks like.   Though I honestly don’t remember the title screen since I’m holding off until the upcoming release is out.   This one does not look familiar to me. 

finally a man with brain...thanks God.....