At first glance it might feel like this went too well but honestly when you consider the fact that Kaoru is like the only reason Nanami has any kind of life at all right now, it's hard to imagine Dad being able to do anything but thank him. Plus it's not like he was lying about his personality while crossdressing, so Nanami's dad actually like knows him very well. They've spent a lot of time together. I only mention all this because I was concerned it would be a big dramatic thing but nah, it's totally fine and it honestly should be. Good job author and Dad.