From the author of Azumanga Daioh, a slice-of-life series about a five-year-old and her dad. Superb -- hilarious and understated -- stuff, with great artwork.
I'd read the first few chapters in fan translations several years ago; ADV Manga later translated the first five books, and Yen Press have done the whole series. Both translations are adequate (rather than fantastic).
ISBN 1413903177.