Tomoyo's life changed when she entered high school, because she also happened to enter Sakura's crotch cranny.
Lying beside her friend, she adjusted the mining helmet sitting somewhat lopsidedly at the top of her head and took a deep breath before diving in. Li had really done an impressive number on Sakura's couchcat - the interior was fitted with elaborate pieces of furniture and fully-functional lighting. Beneath Tomoyo's nose lay an expensive ornate carpet, and beside that, a lonely, forgotten tampon. An air hockey table sat on three legs and various posters lined the walls of Sakura's vagina. Li appeared to be a U2 fan.
"Holy shit!" exclaimed Tomoyo, her voice echoing across the expanse of Sakura's lovetunnel. "There's a fucking plasma tv in here and everything!"
Sakura giggled, the vibrations nearly knocking Tomoyo's helmet from her head.
"Li got really carried away, hm? He liked to spend a lot of time up there."
Tumbleweed drifted past Tomoyo's nose and she resisted the urge to sneeze.
"That was before we broke up, of course," Sakura continued, sounding somewhat sad.
"I can tell," Tomoyo replied. "Your vag is as dry as an Indian prostitute working dayshift!"
Producing a shovel from her backpack, Tomoyo tunnelled deeper. She was close to untouched territory.
"What you're entering now is what remains of the football field," Sakura explained. "Li had it bulldozed after I dumped him because he didn't want me to be making any extra money. A shame, too. I quite enjoy vaginal sports games."
'Aw, Jesus,' thought Tomoyo. 'Here she goes again!' Sakura was prone to sentimentality whenever they did this.
Sakura sighed. Tomoyo was dizzy from the vibrations of her voice as she spoke.
"I often stuffed my head up my ass and watched Li play, in the stadium all lit up at night…I cheered and cheered until I couldn't cheer anymore!"
"In the middle of the night?" Tomoyo asked.
"No problem! My vagina never sleeps!"
Suddenly, Tomoyo slid out through Sakura's mouth, shovel and all.
Then they had sex.