It is a collection of short jokes about Desheng-chan that the author himself never expected to write again.
Currently included:
Library jokes - Librarian Izuku (26) x Junior high school student Katsuki (13)
Milk tea shop short story - support club president Izuku♀ x Katsuki, a college student at the same school
Studio jokes - Internet photographer Izuku x underground cosplayer Katsuki♀
I ended it because I couldn't write the yuri plot.
Conception: