Heian Zankoku Monogatari

"In my opinion, doing work is the same as losing."

This is a world where all adults have perished, and in return, children alone are coexisting (have no other choice) with very strange-looking bugs― And, befalling one after another on the self-proclaimed "Aristocrat" hikikomori, Kozue, together with her close friend Koharu-san, are charming yet "cruel" days.....!?