Story of Sara
Sara McDougal (7 or something) is not actually Seta's kid. She's the daughter of one of Seta's friends. The friend and Haruka were love rivals towards Seta. However, she died of sickness, I think, and her real father left. The death made Haruka believe that Seta loved the other one more, but only wants to marry Haruka because she's the last choice left (actually they make a great couple). So... Seta thus became Sara's ever-loving stepfather. Sara actually has almost no feeling towards all this and continues being bratty and pulls pranks. Sorta reminds me of me when I was little. What's great about her is that she knows martial arts, but dosn't know the non-violence part of it.