University of Arts and Sciences 名古屋学艺大学
Ayumu (23/man) works part-time as a detective. One day, Ayumi's older sister, Yuka (28/female), comes to visit her. Yuka asks him to take care of her daughter Hikaru (9/girl) from August 9th to the 14th. Ayumu is assigned to take care of Hikaru. Hikaru is left in Ayumi's care. This is the story of their summer together.
Ayumu（23 /男性）做兼职侦探。 一天，Ayumu的姐姐优香（28岁/女性）来看他。