Arisa Kazuki

Tsukasa Kazuki's kind older sister. Her and Tsukasa are both very attractive, becoming a pair of siblings that are "blindingly beautiful."

She first encounters Anzu when Anzu is harassed after spilling a stranger's coffee. She comes to Anzu's rescue, and when she sees Anzu and her brother together, she immediately sees potential for their relationship. She is very supportive of her younger brother, as she has protected him from the past from their father, and Tsukasa's stalker. She is protective of Tsukasa, and is thankful that Anzu is by Tsukasa's side. She tends to tease Anzu and Tsukasa, although she is not overly pushy considering Tsukasa's past

(Source: Wikipedia)