I actually found some interesting stuff about Velle's scenes while writing the walkthough.
In a couple of the scenes Velle will ask if you want to join her in the pool, or do lewd things with her at the gym, etc and you can pick 'Yes' or 'No'. And of course everyone picks yes because why are you even playing the game if you don't want to see the scenes lol.
Well it turns out if you tell her no you she will magically take control of your body and force you to do different lewd things with her instead of the normal scenes you get if you just say yes. I thought that was pretty cool.
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I'm sure there's more tho.