The night before the convention arrived. Rin went to Sagiri's house again, but this time Marin was with him.
"Hehe~ Masamune-kun, we're borrowing Sagiri for the night!" Marin chirped, waving to the brother as she led Sagiri away. Rin followed, carrying a small suitcase.
Sagiri kept her head down, tugging at Rin's sleeve to make him move faster. Once the door closed, she exhaled in relief.
"Hehe, why so nervous, little Sagiri?" Marin teased. Having shared a "party" with her on the island, they had no secrets.
Sagiri stomped on Rin's foot. "It's because of this pervert!!!!"
"Ow, ow!" Rin laughed, patting her head. "We have to hurry, or we won't have enough time."
Usually, cosplay prep starts in the morning, but Sagiri had promised Rin a private "special cosplay" beforehand. The suitcase contained her outfit: a super-short Shimakaze costume—a backless, sleeveless sailor top with a pleated skirt that barely reached her crotch, plus a black rabbit-ear headband, a tiny T-back, and red-and-white thigh-highs.
But the suitcase also contained other "props": pink vibrating eggs and a large medical syringe.
"I'll wash myself!!!!" Sagiri grabbed the syringe and bolted for the bathroom at Marin's apartment. Marin and Rin laughed behind her.
Inside the room, Marin toyed with one of the plugs. "I didn't know a shut-in like Sagiri had a fetish for this... Is this 'exposure'? Well, she doesn't want others to see, so maybe just the thrill of it?"
"She likes the risk," Rin cleared his throat. "I 'trained' her to associate leaving the house with extreme pleasure. It might have worked a bit too well. Now, she gets wet just stepping out the door, and she loves playing with toys in public."
"Ito-sensei, what about me...?" Marin asked, her eyes full of expectation. Rin had promised her a "first time" like Shizuku-tan from the game 'Slippery Girl.' Since the costume was finally ready, tonight was the night.
"Of course," Rin said.
"Yay!" Marin kissed him. "Before Sagiri finishes her bath, let's 'review' the game scenes."
They sat on the carpet with a laptop. Rin's hand slid under Marin's skirt. Marin unzipped his pants and leaned down.
"Ito-sensei... focus on Shizuku-tan. She's 'servicing' you right now... Ahm~"
Marin took him in. As the game characters made wet, slurping sounds through the speakers, Marin mimicked them in real life. Rin felt like he was being serviced by the character itself.
"Deep throat!" Rin commanded, pressing down on her head.
"Mmph...!!!!"
Marin gagged slightly, just like the character in the game. Rin choice the "In Mouth" finish option on the screen.
"Gulp!!!!" As the character swallowed on screen, Marin did the same in reality.