The light novel started serialization in Monthly Dragon Magazine in April 2005, published by Fujimi Shobo.

Shungo Ninomiya, a high school guy, lives in a large house with his older sister Ryōko, who works as a mercenary.

Making things more awkward, Shungo's jealous childhood friend, student council president Reika Hōjō, joins the household as a maid.

"); both songs are sung as duets by Mai Kadowaki and Miyuki Sawashiro, who voiced Mayu and Reika respectively.

Starting December 15, 2010, Crunchyroll released English subtitled episodes of the series under the title Good Luck!

Ninomiya-kun to other similar genre productions, saying, "Some shows score a Perishable because they're incompetent, but those are the rare interesting ones.

The vast majority of perishables are just barely functional product, not worth picking up over hundreds of other titles in the already crowded anime boob show market.

Ninomiya-kun is one of these, a wallflower in the crowded field of fantasies about having a succubus and an heiress maid competing for your affections.