The game itself is great and all, but with such games with many different characters I always feel kinda bad about certain ones not receiving a penetration animation (when possible, that is) and ending up being more niche.
I know there were scenes for the apprentice in "Attack it! Devil Legion", but I kinda hoped to see another variant (or at least even the same animation) here once I knew they were included in the Lab (though I also thought they would play a bigger role, which they didn't).
Another example is the mouse hiding in the wall, I really could have seen the possibility of the MC himself being able to initiate a scene if the mouse fails to catch him from behind and then falls onto the ground, but there wasn't more to it.