President Yukino, Elven Conquest... Yukino is good, but has 3rd person NTR. (Someone else getting NTR'd but he likes the idea...) and Elven Conquest hasn't been finished by me yet but its a good one so far... Leanna's Slice of Life appears to be medieval Yukino copypasta if you prefer that setting over modern era... but Leanna SoL has a Shota tag. Oh and Yukino also can be involved with Shota as well...
Good, but with funny/bad translation: The Heiress, Material Girl. (Rape is apart the moral degradation in both...) This is also the baseline experience of any Dieselmine/ONEONE game. Protag starts good only for to be slutified by in game events... Almost always involves rape.
Good, but can't be found here: Tales of Androgyny. (On itchio, Has Femboy/Futanari protagionist)