I was asked by my sister to take care of Hinano, but she was rebellious and immediately plotted to run away. To control her, I restrained her with a collar and handcuffs. The next morning, Hinano couldn't make it to the bathroom and wet herself. While changing her soaked underwear, I noticed her crotch wasn't wet from urine but from slippery discharge. Since she kept refusing to eat, I decided to force-feed her. When she continued being disobedient, I slapped her repeatedly while scolding her until she broke down in tears. My arousal grew along with my frustration, and I made her give me a blowjob. After about a week, Hinano slowly began opening up, but her bedwetting habit didn't improve, so I started making her wear diapers to bed. When Hinano complained of abdominal pain from constipation and no laxatives were available, I attempted manual removal. The anal stimulation made her aroused, and as I continued, her excitement mixed with mounting urination until she involuntarily peed. Each time, I made her sit on my lap and spanked her bare ass while forcing her to reflect. After half a month, Hinano started attending school again. As a reward for being able to go outside in diapers, I gifted her ears and a tail. The tail had an anal plug attached, and she became intensely aroused, eventually losing bladder control and wetting herself. I made her jerk off my cock while wrapped in her piss-soaked diaper, then forced her to swallow my cum with a blowjob.