Big Breasts Nudity Zombie/s Blood and Gore Fellatio/Blowjob Public Sex Sex Apocalypse Sex From Behind Borderline H Murder/s Group Intercourse Lust Sex Addict/s High School Harem-Seeking Male Lead Young Male Lead Violence Breast Grabbing 21st Century Japan Survival Shiro Gyaru School Girl/s Kuro Gyaru Big-Breasted Female Character/s School Uniform/s Beautiful Female Character/s High School Student Female Lead Sexually Active Couple Sexually Active Female Lead High School Student Male Lead Big-Breasted Female Lead French Kissing Gyaru Female Lead Muscular Female/s High School Student/s Sexually Active Male Lead Paizuri