What you should look out for (The manga is rated 16+) :
- Amane the main character lends energy to Hyoue her spirit guardian by kissing him. But nothing graphic.
- Spirits, ghosts, psychics; Japanese religion
- Violence; some of the angry spirits and ghosts are very violent, and during fights blood is splattered. Comparitively, if you can handle Kenshin, you should be fine with this.
- :edit: Hyoue is a bit of a potty-mouth and swears a lot, other characters occasionally swear - typical of anything you would hear in a high school. No f-bombs.
Like I said earlier, Her Majesty's Dog is kind of like Yu Yu Hakusho and InuYasha combined - if you've seen/read either of those series and weren't bothered by the content, you should be fine. But if you draw the line at spirits and ghosts and the like, you might want to avoid HMD. I'd suggest reading a few chapters in the store before making a decision. You can also read a chapter on go comi!'s website:
click here and go to the link on the bottom left titled 'Manga Viewer'
Personally, I love it. ^_^