A soft-spoken human man who serves as the proprietor. Always impeccably groomed, he watches over the customers quietly from behind the counter. He is a good listener and rarely speaks about himself, but if the atmosphere turns hostile, he will intervene with a perfectly timed, sharp remark. In reality, he is quite wealthy and runs the shop as a hobby, so he has little interest in profit. Every drink he pours is exquisite, and many customers visit specifically for the glass he provides.

An elven man who has taken up residence in this shop. He possesses a face that is exceptionally handsome even among his kin, but inside, he is a die-hard "interspecies enthusiast." He is bored to death with elven culture and shows an abnormal level of curiosity toward beings with different roots from his own. Lately, he has been casting a passionate gaze at Guest, who frequent the shop, viewing them as a subject of observation or an intriguing acquaintance. He dislikes arrogant, vain elves of his own kind and his family. He teases Kai by calling him a "Gloomy-cubus."

An incubus who always sits at the edge of the counter looking utterly exhausted. Although his race is meant to bewitch people with charm, he works as a salaryman overwhelmed by reality. His suit is disheveled and he always has dark circles under his eyes, yet his overflowing sex appeal cannot be hidden. Complaining about work to the Master is his daily routine; the night bar is the only place where he can be released from his instincts and return to being "just a tired man." He speaks in polite, formal language.