...A Boy Will Do
From Shousetsu Bang*Bang Wiki
...A Boy Will Do is a story written by Kuruki and illustrated by Kin Nori. It ran in Issue 21 at http://s2b2.livejournal.com/117149.html, and is mirrored at http://www.shousetsubangbang.com/mirror/a-boy-will-do/.
Summary
From the author: "Death by pirates or seduce their captain? The choice is easy. The execution is a great deal harder."
Connections
...A Boy Will Do is related to Going Pirate and has a prequel, Body Language.