Responses
http://www.mangago.zone/read-manga/hito_wa_sore_o_koi_to_yobu/ is the prequel 2 this book.
beta
http://www.mangago.zone/read-manga/hito_wa_sore_o_koi_to_yobu/ is the prequel 2 this book.
Is there any other book related to this one?