This article is a dual author. Author: Dugu Yu & Uesugawa. I'm the main writer. In Borderland Japanese Love Song, four borderline characters have a constant relationship. What happens in the corner that no one pays attention to? Monster, painter, writer, detective, what kind of entanglements are there between the four professions? Youdao is - Chunhua even fell so neatly. The era of this article is imaginary and gentle. For cultural and social background, please refer to Taisho. A setting where monsters and humans coexist.