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.
The series protagonist. A 25-year-old foreign cosmetics maker and elite salaryman. He was introduced to Yura through an omiai. He is very critical of his own sexual abilities, but that doesn't hinder him from having sexual fantasies with any pretty girl in his vicinity (ultimately, though, he stays faithful to Yura). Nevertheless, after his marriage he attracts the attention of a lot of female admirers. (Source: Wikipedia)
Sunhara is one of Tomoya's friends. He is calm and does not talk a lot in the manga. In the future, Sunahara marries Yun and they have a daughter name Sana.
Like Kusanagi, Murakumo was also chosen to protect the Kushinada. Murakumo has embraced the power of the Aragami and plans on unleashing that power against humanity. Murakumo has eight Blue Seeds embedded in his body. Source: Wikipedia
Boy genius number two graduated from MIT at the age of 11. Just as intelligent and prone to impulsive action as Billy. Penny goes nowhere without his sidekick, Washington, a large dog. He doesn't have the financial resources that Billy does, so his solutions to problems often have a somewhat McGuyverish feeling to them. (Source: Wikipedia)
Class rep for the second year, "Ouka" class at Kaihou Academy, she is calm and collected, an excellent student and an all-round athlete. She has no weak points. Popular as she is, Hagino never shows emotion, surrounding herself with an aura of mystery.