Prim and elegant, Sachiko has a rough side and a very sweet side. She is very protective over Yumi and cares deeply about her. However, Sachiko often has the same problem as Yumi does — she does not share most of her problems with her sœur, causing many misunderstandings. Sachiko is slated to marry her cousin and fiancé Suguru after she graduates. This has caused her some distress since, because although she initially cared deeply for him, he did not reciprocate. They now have a complicated relationship. Sometimes, Yumi must teach Sachiko how to live informally, for example, helping her select her first pair of jeans. Despite her sometimes stern appearance, Sachiko has her own share of insecurities regarding her relationship with Yumi, not to mention emotional insecurities rising from her home life; both her father and grandfather openly have mistresses, unabashedly dividing their time between home and the mistresses, which apparently led to her general disdain for men, as illustrated in the OVA series during a meeting with the student council members of Hanadera, an all-boys highschool. After Sachiko enters her third year, she is now the new Rosa Chinensis. After the arrival of Touko, Sachiko spends more time with her than with Yumi, which makes Yumi jealous. Sachiko goes absent from school which makes Yumi worried. Later, Youko is sent to "bring" Yumi to Sachiko's grandmother house. Yumi finds out that Sachiko's grandmother recently died, which causes Sachiko to go into depression. Sachiko says that she apologizes for the past few weeks, and asks for Yumi's forgiveness; Yumi says that she loves her very much. At the beginning of the summer holidays, Sachiko takes Yumi to her summer home. Whilst there, Sachiko's acquaintances make trouble for them. Yumi intends to leave, but Sachiko refuses. The acquaintances have a party, and invite them. At the party, they ask Yumi to play a musical instrument for Sachiko's great grandmother. Yumi says that she cannot play anything and prefers to sing the song "Maria-sama no Kokoro"; Sachiko accompanies her with a piano performance. The great grandmother is happy because the song brings back memories, and she asks Yumi to visit next year. In the first season, Sachiko is Rosa Chinensis en bouton, her grand soeur was Mizuno Youko, and her petite soeur is Fukuzawa Yumi. In the second season, Sachiko becomes Rosa Chinensis.
The exact opposite of most of the characters in the show: loud, rough-around-the-edges, she loves doing what she can to push other peoples' buttons. She enjoys mercilessly teasing or being mischievous, conducting most of her antics around Fukuzawa Yumi. Despite being a non-conformist in the ranks of the regular girls in Lillian Jogakuen, Sei is one of the wisest and caring characters on the show. Though seeming to have a playful and laid-back attitude, she has experienced many tragedies in her life, especially in her second year. Sei is known for doing things at her own pace, and dislikes being pressured into making decisions and taking action. She took Toudou Shimako as her soeur while in her third year. Her relationship with the first year is seen to one of mutual understanding and selective support. Sei however has an especially close relationship with Yumi. Sei becomes a source of comfort, and emotional outlet and close friend and mentor for Yumi. She is often noticed by others for her unconventional looks; many strangers have assumed that she is a model. Sei is not purely Japanese, and has Anglo features, as seen by her hair and eye colour as well as her Caucasian facial bone structure. After leaving Lillian, Sei studies English and American Literature. Part of this could result from her bibliophile behaviours she picked up during her second year in Lillian when she immersed herself in reading as a form of escapism and trying to understand her conflicting emotions during that time. She drives a yellow Beetle and is a terrible driver.
She is part of the Kendo Club and is an admirer of Rei Hasekura. She went on a date with Rei in the first season after finding Rei's card in the treasure hunt on Valentine's Day. In the fourth season she is the finder of Yoshino's card. (Source: Wikipedia)
She is one of the 8 identical humans that created from genetic material collected from the male and female agents with the top results over three generations of agents who have gone through the facility. She develops romantic feelings for Fujimaru after she was told by Fujimaru that she is not just a clone but an individual. And later in Season 2 it appears that she and Fujimaru are in relationship.
Xin is one of Kingdom's main characters. He grew up like a slave together with his best friend and fellow orphan, Hy�, in a small village, but the two always dreamed of leaving their social class by becoming the wolds greatest generals. Not much is known of Shin's family or past. Xin has a temper, but he also has a good heart. He is clearly loyal to his friends since he vows to not stop until Hyou's is fully avenged-even at the risk of his own death. His hot temper also makes him clash with Ten and they tend to bicker like siblings constantly! Xin's swordsmanship skills are very good due to his constant training over 1000 times with Hy�, but he also has monstrous strength and is very agile. In the fight with Jo Kan, it seems that Shin also has the ability to adapt very quickly in order to get the upper hand in battles. Xin dream is to become the world's greatest general, so that his name will be known even in the heavens. He shared this dream with Piao and now sets out to fulfill it for both of them.