So, with that blushing, Mori's seemingly falling for Ryuko...unknowingly falling for the same person with the end result still probably it being unrequited is going to suck(since Oniki still has shown no romantic interest in her even after finding out, just not wanting her to be hurt). I feel bad for her.
Just dress up as a different girl and be your cousin Ryuuka instead. Then you still dress up as Ryuuko at home and we get 50% more Oniki per capita. (This will also balance things out when Oniki decides to stop being Ryuusuke.)
Ringo is 100%, completely fucking lost to the realm of insanity. She clears the bar of most deranged character easily, and in this manga, with Tama being there? That's something.
Naturally we stan Ringo in this household and wish her the best for future endeavors, no matter how cursed they are.