Taichi is attending university in Tokyo and is staying with his aunt. For Taichi, who has no experience with women, living with his aunt is a constant source of excitement. Even though his aunt is a lazy person, she walks around the room without a bra, flashing her cleavage, almost to the point of a slip-up. "I know you've been staring at my boobs... Hehe, if you'll be more honest with me, Taichi, I'll let you touch them as a special favor..."