Ichika Arima

Ichika Arima (有馬一花, Arima Ichika) is Rio's best friend. Ichika sees a man who is about to fall down the stairs on the train station and pulls him back using her umbrella. He thanks her for saving his life and she hears he hasn't eaten breakfast and was weak most likely due to anemia so she gives him her lunchbox and leaves. Later, she goes to her friend Rio's apartment and when Rio's older brother returns, she is surprised to see the man she gave her lunchbox to earlier. While Rio is on the phone, the man introduces himself as Amakusa Ryou. He wants to thank her, but considers buying her clothes or shoes is too cheap and offers a kiss. Ichika is immediately disgusted and expresses it, however Ryou finds her reaction wonderful.