The substantial protagonist of the manga, who has long red hair. She behaves like an Edokko and speaks in a masculine tone of Edo speech, but she is actually from Tokushima Prefecture. She acts tsukkomi and often says "Don't ask a trifling question! (Tsuman'nē koto Kiku na yo!?)" Her name is a pun on Bloody Mary. (Source: Wikipedia)
Although Shuu appears to be playful, he is actually very sensitive. He was the first one who realized that Chitoge and Ichijou were not actually dating. Also, he was the only one who seemed to realize that Tsugumi was a girl, though he hid the thought and decided to play along just for his own amusement. Also, it should be noted that Shuu is the kind of person that would do almost anything for a laugh. He is the best friend of Raku Ichijou. He is in love with his English teacher, Kyoko. He confesses just before her departure for her wedding.
Age: 16-17 Ei Sei is the king of Qin who bears a striking resemblance to Shin's friend Hyou. His father was the late king, but his mother did not have any royal blood. Ei Sei seems level headed but somewhat cold. When Shin was going to let Jo Kan leave, Ei Sei kills the assassin without remorse. However, he does care at least a little bit about those loyal to him.
Teng is Wang Qi's aide and seems to be an army man himself. He is the only one who actually has any idea what Wang Qi's plans are.