A no-brainer if you've watched the first season. The same adorable gag humour, the same charm and creativity, the same colourful, bright chibi art/animation, without missing a beat. Chidori, the shinobi, while still as adorable, naive, and kickass, keeps growing throughout as she learns more about the goings-on and tactics of war and war time from the people and events surrounding Nobunaga during his ongoing fight for a unified Japan. Like Season 1, events move fast--as it should in 3 minutes--gaining more speed once it moves into more meaty affairs, each lovingly depicted with their own original, comic twists - watered down and in tune with history,of course.
Many more characters are introduced, all as quirky and amusing as the next, leaving the viewer with much to root for, or laugh at, or both. Even not knowing the history/characters, it's all fairly understandable and still enjoyable.

Coupled with bg-music and inserts that never fail to excite, the series altogether continues to make for an exceptional 4-koma anime that, honestly, I wouldn't mind watching for ten more years. ;) It's a fun almost-necessary stress-buster of a ride.