Yes, there will be 10 playable levels and 21 ghost (+5 extra) before the game is done.
Code is not hinted in the game yet but it's DAHLIA. Use your keyboard to figure out the code. If you unable to I'll tell you what it is.
I'm probably dumb or blind.
I searched everywhere but found nothing.
Could you please give the code for
"Sex Room" in Himawari's Asylum.
It's 316981.