1 night 2 days left overtaken by my wife's sister who suddenly pushed me Reira Natsuki

The movie revolves around a scenario where the husband is left alone when his girlfriend goes abroad, and he is visited by his wife's sister, Reira Natsuki. As they spend time together, they develop a close and intimate relationship, leading to a series of passionate encounters. The central dramatic tension arises from the secrecy and impulsiveness of their actions, as they navigate their desires and boundaries.