Alternative Name: Keiyaku Shimai;Keiyakushimai;Perjanjian Saudari;สัญญาใจยัยน้องสาว;ケイヤクシマイ;계약 자매

Genre(s): Romance

Demographic: Shoujo Ai

Summary:
Kasane Hayafuji's secret joy in life is seeing Aoyama-san, a waitress at a family restaurant. One night, she saw Aoyama standing alone in the rai... MORE Kasane Hayafuji's secret joy in life is seeing Aoyama-san, a waitress at a family restaurant. One night, she saw Aoyama standing alone in the rain. When she tried to help, Aoyama suddenly made her an offer. "Will you be my big sister?" HIDE