Noks is a city where only vampires and night monsters live. Eleanor is brought there and protected by a strange gentleman. "You've come to a difficult place." A vampire man... Rio invites Eleanor into her house, and his brother Dylan, who was obsessed with hiring Eleanor as a maid, gradually recognizes him as family and gets rid of her brother. I have lived while being taken care of. And when she becomes an adult, she offered her blood, and the relationship between the three becomes even closer. Vampires will instinctively go into heat if they like someone who has drunk their blood. " It's disgusting to see her as a woman... as a breeding partner...!" This is a story about a girl who was picked up by two gentle (?) brothers and repays the favor by serving them.