My Childhood Friends Mask Their True Nature Well ~BAD TRIP~

Even after her relationship with Yuuki is exposed, Mei continues a secret, intimate arrangement with Aki. As time passes, his increasingly deviant demands escalate beyond her control. One day, Aki leaves Mei alone in her room, restrained and stimulated by toys, while he attends school. Concerned by her prolonged absence from classes, Yuuki decides to visit her home, only to walk in on her compromising state. Despite the shocking and indecent sight of Mei writhing in pleasure, Yuuki finds himself unable to suppress his own desires. Overcome by temptation, he reaches out to touch her, initiating an intense encounter between them. When Aki returns home, he discovers the two consumed by passion. Rather than reacting with anger, he coldly critiques Mei's performance, instructing her to move in ways that better please men. From that moment, all three become inextricably bound together, spiraling endlessly into a shared descent of debauchery. Serving as a direct sequel to Sotozura no Yoi Osananajimi, this story explores a dark "bad end" route where Mei ultimately becomes entangled in a twisted threesome with both childhood friends.