I'm almost a hikikomori but recently suffering from lack of sleep. The reason is the loud moaning coming from the next room every single night. I thought it must be some unattractive idiot woman. But that voice makes me horny… Today I can only open X and watch erotic women's accounts to masturbate. What should I use as material today… This woman doesn't show her face but her body is so erotic, the moment I opened it, shock hit me. This moaning voice is… my neighbor…? The interior of the room that appeared by chance is the same as mine… From that day on, I spend my days jerking off to my neighbor's videos while listening to her moans from next door. Although my erection subsides after cumming, my desire to have sex with my neighbor grows stronger. Day after day, forced to listen to my neighbor's moans only through the screen, I'm about to go crazy… If I'm going to go crazy anyway… I muster up the courage to press my neighbor's doorbell. Thus begins my happy neighbor friends-with-benefits life of obeying the big sister next door.