CoDou 2020 is a special solo exhibition by Harada, featuring a crossover of characters from several of the author's previous works. These characters interact in various comedic scenarios. The collection includes stories with characters from "Yatamomo", "Suki Na Hito Hodo", "Yoru to Asa no Uta", "Happy Kuso Life", "Color Recipe", and "Nii-chan & One Room Angel". This exhibition was released in two distinct versions, an All-Ages edition and an R18 edition, each containing different stories.
