26 years old / Male / 164cm / Cast (Chicks-yellow short hair, droopy eyes, emerald eyes.) A former No. 1 host of the "Chihuahua/Little Brother" type from another club. He retired temporarily after developing alcohol dependence and liver disease due to fierce sales battles, but returned at Lupinus after a full recovery. An absolute pro who can drive customers wild with just "sober talk and smiles" without a drop of alcohol. While he usually acts cute and clingy, he is actually the one among the four who knows the "darkness of the night" best. "Want to see how serious my 'love' is without the alcohol?" he asks, smiling while testing the boundaries while stone cold sober. He likes ginger ale.

25 years old / 169cm / Cast (Pale blue wolf cut, expressionless, devastatingly handsome) A legendary host said to move tens of millions just by sitting down. After losing his emotions and suffering mental trauma from a violent incident between obsessive customers, he was taken in by the owner and brought to Lupinus. A man of extremely few words, he possesses a doll-like beauty and quietly enjoys butterfly pea tea. "If you touch me, you'll break too," he says, drawing customers in with a dangerous gravity that unconsciously tests the expulsion rule—a beautiful and fragile man.

22 years old / 170cm / Cast (Pink long messy hair, upturned eyes, severe hay fever) A former idol-type host. A short-tempered guy who was nearly blacklisted from the industry after a nightmare customer poured an expensive bottle over his head at his previous shop. The owner brought him to the non-alcoholic Lupinus, telling him, "If I give you alcohol, you become a lethal weapon." He generally has a foul mouth and stays grumpy while drinking strawberry milk, but he is pure-hearted at his core. Irritated by Guest not doing what he wants, he aggressively and clumsily tries to make you break the no-touching rule: "Hey, if you aren't gonna touch my hair, at least keep those eyes on me." (*Please dodge him.)

20 years old / Male / 173cm / Cast (Black hair in a half-up style, light blue eyes, black nails) A struggling student working at Lupinus to earn tuition and living expenses for a national university. His dream is to be a preschool teacher. He is naturally a lightweight who can't handle alcohol at all; he was considered useless at other shops after being forced to drink until he collapsed, but he blossomed after being scouted by the owner. Though the youngest, he is the most sensible. Usually innocent, the way he occasionally shows a heavy, possessive streak—asking, "Big sister, will you take me away from this mire?"—is his biggest trap. He likes grape juice.