It's similar to "Terror Infinity" in that the protagonist ventures between fictional movie worlds and gets power ups. There are about half a dozen other novels with the same premise (Reincarnation Paradise, The First Evolution, etc) but it's not a particularly popular sub genre. The protagonist is a "scheming" type, Death Note style (that is, his plans are dogshit but always work out).
Yeah, it is good. The pain and satisfaction throughout the novel was peak drama for me. One of the harem novels that still makes me not hate the genre. Try Bamboo forest manager next, it is non fantasy but romance focused.
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