As two other students, Yako Jingūji and Haruka Shiraishi, hear rumors of her engaging in "enjo kōsai", or compensated dating (which often is viewed as being close to or the same as prostitution), they investigate.
To andre elever, Yako Jinguuji og Haruka Shiraishi, hører rygter om, at hun er involveret i "enjo kousai" eller kompenserende stævnemøder (hvilket ofte anses for at være tæt på eller det samme som prostitution), og beslutter at undersøge det.