[Makosho] Mujintou de, SEX ni Kyoumi Shinshin na Dosukebe Inkya Joshi-tachi to Harem Life [CulturedCommissions]

Stranded on a deserted island with six gloomy, introverted classmates, a virgin loner finds the shy, glasses-wearing girls hiding insatiable sexual curiosity beneath their quiet exteriors and soft, heavy busts straining against bikinis and underwear. What begins as a trembling invitation in the old school building — one gloomy beauty asking him to have sex — spirals into a secret harem life of sweaty, daily group entanglements where promises to keep things hidden only make the stimulation more intoxicating. A week later back in school uniforms, the busty, eager girls cling to him with flushed jealousy, desperate to know if he still craves their bodies after sharing his virginity with all of them multiple times a day.