For all ThornSin enjoyers, I'd like to recommend Night of Revenge to you too. The similarities with ThornSin makes it so that it wouldn't surprise me if Night of Revenge is one of the baseline inspiration for ThornSin.
Tho of course content and gameplay wise, Night of Revenge is better since its already completed. However, quality wise ThornSin's art is more definted - the translator for ThornSin is also hands down the victor, as Night of Revenge reads like it just barely got Proofread and Edited after getting Machine Translated; although its still legible and the various storylines are easy to follow and understand.
Difficulty wise, Night of Revenge is also easier (even on Very Hard mode) as there are tons of Altars which act as Save-Points. Interacting with the Altars also replenish your recovery items so you can be less strict in managing them, while you have a certain leeway on regaining lost health by damaging or defeating enemy units.
For H-Scenes, each enemy on Night of Revenge has at least 2 sex modes - and there's no damage received for being fucked, so you can intentionally get knocked down, enjoy the show, escape, use a health pot then move on to the next new enemy. Even if you lose all your Health Points, you just revive on the last altar you used instead of starting all over again. So you can watch all the area's Defeat H-Scenes in one playthrough; do keep in mind that you lose Idea Points (experience points) when you revive so its best if you spend those experience points leveling your character before committing sexcide.
There are also tons of other features and a few more similarities, but over-all, what I want to say is.
TL;DR If you enjoy ThornSin, check out Night of Revenge.