I know it won't happen because people want more of a fast burn, but I would love a scenario where Liz has already been corrupted by Inoda (she tried having sex with Kirito but it didn't feel good, and she experienced Inoda's Dick) and Inoda has been giving Asuna the cold shoulder/trying to get her jealous.
They're all in the massage parlor and Inoda is massaging Asuna and Liz is massaging Kirito. Inoda continues to edge Asuna until she's about to give in, but then Liz finally puts Kirito to sleep, then heads over to the other side to get railed by Inoda. Inoda completely ignores Asuna while she goes over to Kirito to try to reach climax. She hears Liz crying in pleasure, continued orgasms while she can't seem to cum with a sleeping Kirito. She slumps to the corner and begins to masturbate to the sounds of Inoda and Liz, she starts fantasizing about being in Liz's position.
Suddenly silence. She opens her eyes and see's the drapes pulled all the way open. Inoda is laying down on the massage table, with his cock, bulging and completely erect pointing to the sky. Liz is no longer riding him and standing next to him with her hand slowly gliding up and down Inoda's cock, almost as if presenting it to Asuna. Asuna's eyes are glued to it, her pussy is dripping. She staggers towards the table, completely in a daze, climbs on top of Inoda, spreads her pussy lips and slowly goes down on his monstrous cock.