Was going well, until unexpectedly, and I think out of character, the MC turned into a rapist. Then the next sex scene is about dominating his stepsister sexually. Not my thing, and to me seems completely out of step with the theme of the story, so I uninstalled the game.

Old but gold! There are a lot of entertaining paths. Main character is not a jerk unless that's what YOU want :)

Great Nukige!

The insane ending was like...o.o...o.O...O.O...x.x

A guy's dad gets married and he gets a milf stepmom and a new step-sister. Tale as old as time. Except the MC is um...a bit of an evil jerk in most of the branches. If the stepsister is chosen as the route he frequently physically assaults her (like quite badly), pimps her out, and generally treats her like trash. To be clear, there are other routes were none of that happens and he's a normal dude, but considering the stepsister is on the cover you would figure that's the route you would go down. Some of the endings are DARK and contain mental breakdowns and murder. You can of course go for the Milf or the childhood friend, but the milf branches also get crazy and sometimes disturbing. However, considering the art is quite good (even if it's in that awkward period of sharp chins, huge eyes, and tiny mouths) and the scenes are enjoyable if you can ignore all the physical assaults and sister abuse. 4/5