Yuriko smiled and told to Densuke "Since you like my butt so much, I'm going to let you go INSIDE of it! Ain't I sweet?"
You panic and start squirming under her ass as best as you can, but it's impossible, it's too big for you to do anything.
"Awww, he really wants to go up my butt!" Yuriko said giggling as she lifted her mammoth-sized bottom. She then proceeded to slowly lower her panties, showing you her gigantic ass. It was already scary when covered, but now it was breath-taking, her dark crack taller than you. Fear paralyzed your body.

"Now... time to come in!" Yuriko smiled as she exclaimed this, picking Densuke and slowly lifting him towards her big, big butt. She first placed you inbetween her massive cheeks, which she clenched on you. Very soft, and very painful. Then she used her free hand to spread her buttcheeks and placed your face right in front of her anus. The smell was awful and disgusting, and it was about to get worse. "Heere, I'll give you a push~" Yuriko said on a singing voice as she pushed you into her hole head-first.

The stench on the inside made the smell on the outside seem heavenly. You tried to escape but her grip was too strong. She then proceeded to shove you all the way to the waist when Yuriko suddenly stopped, but still hold your legs. For one second, you think she's going to pull you out, but instead.... BRRRRRRRRRRAFT! An horrible gust of stinky wind goes through you, rumbling your entire body. Great, Yuriko has farted on you. "Oopsie! I had beans today, sorry." she says kindly. You really want to puke, but can't,