Unfinished no Sho: Higeki no Monogatari ni Shiawase no Ketsumatsu wo

is a Japanese light novel series written by Shinya Asahiro, with illustrations by Kou Kusaka. The series began publication on May 10, 2020 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Recruitment of "hero". Teruma, an ordinary high school student, visited a Western-style building where a mysterious beauty is the main character, attracted by such a suspicious part-time job recruitment poster.

Inspired by her employer, she picked up a special book, "The Book of Unfinished," which invites the person who reads it to sleep and drags it into the world of books.

Teruma who became a longing hero in the world of the story and met a pretty heroine. But one night she was killed.

Teruma finds out that only the main character can lead the story to a happy ending, and returns to the world of books to save her. Can he solve the mystery of the story and make the heroine happy?