Thank you! :)
But yeah, some of the scenes in the game might be a bit tricky to find - some of it is by design as I like the idea of players stumbling onto new things. I know it's really annoying to the completionists though, so I'm sorry, heh. The yoga stretch is a short alternative scene which happens if you turn Nanako down in the intro. As for Hermione's upskirt, it's also in there. You'll need to peep on Hermione in the toilets, under the stall door, and her corruption has to be 30 or greater.