I thinks the tags should be changed to both male and female protags, from the previews I saw you can take the sister clothes off as she sleeps, she can't do it herself, she's not a Jedi
from all ero game i have played. i think this is the slowest one.
the transition in between cutscene, talking, chat box appear is really slow. let say every transition take 1 second. accumulate all of that transition maybe you could collect 1-2 hour time waste when you finish the game, assume you dont know what to do in the game