[Manpuchi (Nekodel)] I Went To A Love Hotel With My Grandma And We Crossed The Line [Penguin Piper]

An eternally young vampire grandmother treats her grandson to a summer festival night of goldfish scooping and shaved ice, but the evening takes a turn when the two check into a love hotel together. Once they cross the line, grandma discovers her boy has truly grown up and struggles to keep quiet, terrified grandfather could return at any moment. Between her stubborn refusal to be outdone by her own grandchild and a vampire's craving that leaves her whimpering for blood, this pure-love romp turns an innocent family outing into something far more intimate.