I’ve started 『ターン』by Kaoru Kitamura (北村薫). It is the first time that I am reading this author. According to Wikipedia, he mainly writes about puzzles and questions encountered in everyday life. He is considered to be the pioneer of the 日常の謎 (everyday mystery), a sub-genre of mystery fiction.
It took me a while to get used to the author’s style, because the way the story is narrated is a bit unusual, but the story is slowly growing on me :)
@Akira1108
Hello! I’m glad to hear that スキップ is good, I’m adding it to my list :) The covers of スキップ and ターン looks very similar, I love this design!