Reap What You Sow

From Shousetsu Bang*Bang Wiki

Reap What You Sow is a story written by Seishin No Uwagi and illustrated by enkaiein. It ran in Issue 36 at http://s2b2.livejournal.com/214699.html, and is mirrored at http://www.shousetsubangbang.com/mirror/reap-what-you-sow/.

Summary

Superheroes and supervillains can totally get along. No conflict of interest there. At least that's what Dark Ash tells himself when he runs up against BoyMercury and into a hard handful of a situation that he can't quite get a firm grip on. Nothing could possibly go wrong, and yeah, he believes that like he believes in Truth, Justice and the American way. As a traditional villain, Ash is a firm believer in taking what he wants, but the thing about heroes is they have this irritating tendency to come out on top.

From http://flugantamuso.dreamwidth.org/37638.html: "short, superhero/supervillain."