The Devotion of Suspect X (Korean title: 용의자 X의 헌신; original title: 容疑者Xの献身) by Keigo Higashino (東野圭吾) has been read or recommended by 5 Korean celebrities, including Lee Jun-hyuk, Jinyoung (GOT7), Karina (aespa). Below, each entry shows where they mentioned it and what they said.
Reading the novel and watching the film left a sense that the world is too cruel, and brought tears. (Source: fan-compiled Notion page)