お注射しましょ ～催眠メイドとペットなお嬢様～

I ended up with the lady's bunny panties by some twist of fate, and got stuck hiding in the mountains after being falsely accused of theft. But I'm not the type to stay holed up forever. After some intense training, I mastered the secret technique passed down through generations: hypnosis that works anywhere! Back at the mansion, I use my hypnotic powers to impersonate the lady's doctor and have all sorts of naughty fun with a maid♪
However, for some reason, the hypnosis doesn't work on the lady herself…!? Even without experience, I just go with the flow and make things happen — that's my new life in the mansion. I'll give them lots of penis injections!

[Translated from the official site]