beta
I found there are audio dramas for each of the doujin parts. There are sample audios if anyone is curious to listen u//w//u
Book 1: https://www.dlsite.com/bl-touch/work/=/product_id/RJ357745.html
Book 2: https://www.dlsite.com/bl-touch/work/=/product_id/RJ357745.html
Book 3: https://www.dlsite.com/bl-touch/work/=/product_id/RJ357576.html