Yukie Marui (丸井雪絵 Marui Yukie) is the buddy of Haqua. She works by selling Gokult (a parody of Yakult, a japanese milk-like drink).
Yukie is energetic and follows a Tai-chi TV series to exercise. She seems very happy and is not ashamed of what she does. She feels shy when someone watches her bringing Gokult drinks to customers. She calls Haqua "Hacchan" and cares deeply for her, thinking of Haqua as her own daughter. She likes to gossip.
Not much is known about Yukie's background except for the fact that she has been in the Gokult business for a long time. She was the number one seller when she was younger, but at the moment, few are willing to purchase the drink.