This is a set of two essay books by Masato Sakai and Masayasu Wakabayashi. - Author: Masato Sakai - Title: Bun, Masato Sakai - Price: 650 yen + tax - Publisher: Bungeishunju - Author: Masayasu Wakabayashi - Title: Complete Edition: Social Adult University, Introvert Department, Expected to Graduate - Price: 640 yen + tax - Publisher: KADOKAWA Thank you for looking.