SIE-Hina's Online Porn Adventure

A delivery arrives at Keiko Ayamura's house. The intended recipient was his older brother, Takuto Ayamura. What's inside was the red-hot VR game, Sexual intercourse Ecstasy. Unable to resist the temptation, Keiko activates the SIE in her brother's room... Her gamer tag was 'Hina'. Once logged inside, Keiko was trapped by the game master. She couldn't log out. Keiko desperately attempts to escape, but there was no reset button present. And this was a game of porn... Hina's adventure to escape hereby begins.
-- Activating the SIE Two years has passed since the world's first VR (Virtual Reality) game was released. Initially starting with RPG, the VR offering proliferated to shooting, simulation, and fighting games. And this year, a revolutionary game was released. ---- Sexual intercourse Ecstasy -
Known as 'SIE' for its acronyms, this game was... A game of porn. This is the story of a girl who inadvertently activated the SIE.