【Instant purchase OK!】【Anonymous shipping, free shipping!】 This is a set of 5 books: the three-part "Hikikomori Detective" series, a representative work by Tsuki Saki, famous for the "Holiday" series and "Wagashi no An," along with the standalone stories "Kirenai Ito" (Unbreakable Thread) and "Sensei to Boku" (Teacher and Me). I loved the popular "Hikikomori Detective" series so much that I collected these books back then! They are all everyday mysteries, and there are no murders, so you can read them with peace of mind. Recommended for those who like buddy stories and male friendships! Individual sales are possible; please inquire. These were purchased new at a bookstore, but they are old, so there may be some stains and dirt. There is no problem with reading them. Please understand that these are used items stored at home before purchasing. #Tsuki Saki #Books #Novels