eiji Seiha (紫 Unsa Temple 清葉) Sei-ji-ji-ji-ga... The second daughter of Siuji street. 17, a senior in high school. Heroine 2. A talented woman with the highest educational background on campus. Nicknamed the "Princess Rationale," who thinks about and judges work rationally, she has a cool personality for it, but she is intellectually curious. Unlike her cool personality, she frequently socializes with other sisters/friends or acts directly, which is why she is quite active. Additionally, after learning that Arata is not related to her, this personality manifests itself as a rational curiosity for her younger brother and even a favorable personality for Arata, showing an active attitude that contrasts with her cool personality. I speak honorifics to everyone.