17-sai to, 18-ijou: Kouhai Gyaru wa Watashi to xx wo Shiritairashii

Name: 17-sai to, 18-ijou: Kouhai Gyaru wa Watashi to xx wo Shiritairashii
Author: Sakaki Hirosawa

17歳と、18以上～後輩ギャルは私と××を知りたいらしい～

Format: Novel