[Non-harem + suspense + growth flow + no system]
"There is no god in this world."
"Everything is a conspiracy of the gods."
"You look delicious, hehehehe!"
…
"You are... A rare delicacy in this world."
…
"Now you have two choices. One is to go back to your original life and pretend you don't know anything. The other is to cooperate with my next experiment."
…