Manga for someone learning Japanese

Ok, I have a friend who's a big anime fan. He's trying to learn to speak and read Japanese, and had an unusual request. He thought that it might help him to learn it if he had some basic (relatively young audience) manga that he could work at translating, looking up the words and kanji as he goes to figure out what's being said. I'm not asking for RAWs of anime/manga, just names of manga that have relatively simple content (and maybe helper hiragana beside the kanji) that might be useful for this sort of thing. If I can't find a copy of the manga in RAW format, I imagine he'll save up and import it through online stores.

Just make sure it's relatively simple, and, since my friend's a little more conservative than me, light on the fanservice.

EDIT: Sorry, put this in the Manga section by accident. This should be in Suggestions.