I recently noticed both Kanamemo and Papa no Iukoto o Kikinasai! (2012) as anime featuring orphaned main characters. The similarity in concept to Usagi Drop (2011) started me wondering if there’s currently something bubbling to the surface in the Japanese Zeitgeist on this topic .
I received the first 5 volumes of the Bunny Drop (or Usagi Drop, take your pick) manga on Friday. The first 4 volumes are essentially the same story as the anime (general review here, review of region 4 DVD release here), with volume 5 being the first part of the 2nd story arc set ten years later.
One of the things I quite liked in the anime, and in the first four volumes of the manga, were the reasonably positive gender roles.