Mato Kousaka is the original creator of the light novel series I May Be a Guild Receptionist, but I'll Solo Any Boss to Clock Out on Time. The series follows Alina Clover, a guild receptionist whose quest for a stable work-life balance leads her to secretly solo dungeon bosses. Kousaka is credited as the original story author for the manga adaptation, which features art by Suzu Yuuki and character designs by Gaou. The manga is published in English by Yen Press. An anime television series adaptation premiered in 2024, with Kousaka credited as the creator of the original light novels. No verified biographical details or a broader body of original works are documented for Mato Kousaka beyond this single series.