Reiko is the best concierge at the hotel, with a constant smile and Kokoro service that has earned her the utmost trust from her guests. Today, she was making progress with her motto of providing customer service that is considerate to the customer, but she is so enthusiastic about her work that she sometimes ends up indulging in the customer's sexual desires... When she is shown to a room, it is just the two of them. Even if she suddenly hugs or kisses the customer, Reiko does not lose her sincere attitude. Even if she inserts her penis raw, she will settle it with a simple "Please keep this a secret."