Amane's gut was now a little over 10 feet round. She was in the middle of the room, and no doubt the biggest thing in the room. Mitoto giggled at the shocked look on Kiriko's face. Amane also giggled at Kiriko.
Then, Amane's belly starts to rock back and forth. At first, it goes slow, then it speeds up.
"Ohh...going at it like rabbits" said Amane, who was gasping in pleasure. Kiriko still looked shocked and looked as if she was frozen that way.
In Amane's stomach, Seina was pumping into Ryoko. The two were indeed doing the erotic dance of sex. When Seina had saw Ryoko naked, the boy from Earth instantly got a hard-on. Ryoko noticed this almost at once and offered her body to the Earthling, which was accepted. The two caused the stomach to rock violently back and forth.
Outside, Amane's belly rocked back and forth so violently that it knocked over several desks! The room was used as a spare classroom...it wasn't usually used. It was Amane who placed the bed in the corner of the room. The bed would be able to support Amane's weight but not her girth.
"Don't you want to join in, Kiriko?" asked Amane.
Kiriki didn't answer.
Mitoto was fingering herself, but nobody noticed. Seeing Ryoko being eaten made her extremely wet.
The rocking of Amane's belly continued for what seemed like hours (but was in fact 10 minutes). If it wasn't that body enhancement that Seina had all those years ago, he probably would be half-dead. But, the body enhancement gave the boy God-like stamina.
In Amane's stomach, the two lovers cuddled with each other.
"That was fanastic" said Ryoko.
"Yeah..." panted Seina.
"I think they're done" said Amane to Kiriko. "want to try a threesome?"
"I would!" yelled Mitoto before Kiriko could answer.
"To bad you're not married to Seina" said Amane.
"Oh.." said Mitoto.
"But I could use some lovin'" said Amane. "I'm bisexual you know"
Mitoto practically drooled at the thought.
"Hold it" said Kiriko.
"What?" asked Amane. "care to join Seina now?"
Kiriko took a moment to answer.