Agreed that the Tomoka reveal was even better than the sex scenes. Part of what's so enjoyable about Murata and Tomoka's sex scenes is how goofy they get. This was straightforward in comparison. Still hot, but it feels like I've seen it a lot already. It felt banal.
But hey I bet things can only get weirder from now on! They have to navigate how they all know each other, and eventually have a three-way, and eventually bring in the sister. This series has long handwaved away the emotional hurdles to FuriFure, because it's an ero-comedy and we're supposed to have a good time here. Bringing Imashita into the team was getting 'drama adjacent' so I expect things to swing back to comedic.