I've had this idea for a while, and I was finally able to get it onto paper today!
This is one of Inu's favorite ways to torture Uni: possession/fusion. Uni finds it hard to control her emotions and movements as Inuni. She only really has control over her ears, right eye, arms, and right leg.
Inu controls pretty much everything else covered in gray fur. Although, this even includes Uni's thoughts, emotions, and horn.
After Inu finally decides enough is enough and leaves Uni's body, Uni is usually left crying and weakened. Depending on how bad the experience was, it can take from minutes to hours to recover.
Fun Fact: Before I created Inu, my first ideas for an "anti-Uni" came from a random scenario I made up around a year ago. In this specific scenario, "anti-Uni" impersonated Uni (and basically transformed into a clone of her) so that she'd get close enough to Nyan to eat him.
Mmm... Cherry.