As close to Pale Carnations as possible, with a good story and also plenty of choice. I also like the corruption part, if you like it too.
Harem Hotel has a LOT going on content wise, but the story is not as dark as Pale Carnations
Depraved Awakening and
City of Broken Dreamers
All personal recommendations:
I would classify
Maids and Maidens as "in the same vein" as Pale Carnations in that they're both HS games where MC dominates (or romances) various women, but the age and power dynamic is different between MCs, but there is no bondage (...yet? Indications of future content).
Harem Hotel is the HS corrupting dominating sibling to
Hail Dicktator's DAZ3D BDSM focus. Both have MC managing a hotel hosting a growing ensemble of lovely employees/residents.
The Headmaster is a good HS game that emphasizes the "D" in bdsm set in a "high school". Think: you swapped places with Kathleen and are directing her how to Dom the house girls (like which spanking tool to use, and when), with newer content allowing you to take a more "direct" approach.
Depraved Awakening and
City of Broken Dreamers are certainly good but darker storytelling from the same dev, though I wouldn't call them "like PC" as there's not much Dom or corruption content in CoBD (it's been a while since DA wrapped up, so I might have forgotten some content).
Another game with some potential "dark content" would be
Karlsson's Gambit. Heavy focus on femdom, but optional maledom and malesub paths with quite a lot of player choice.
However, THE BEST corruption game that I can recommend is
A Mother's Love. I highly recommend this game regardless, but if you like Rosalind as a sexually insecure MILF, and the choice to romance or corrupt/Dom her, then this game was MADE for you. Pay no attention to the "Abandoned" tag, the dev is currently posting progression updates after a year-long hiatus.
There are other story, choice, bdsm, or corruption games I could recommend, but I wouldn't classify them as "like PC" considering style and/or niche/targeted audience.