Himawari is back in all her comical ninja mischief. The sequel to Himawari continues with the many odd and hilarious adventures of Himawari, Hayato and her ninja classmates. Season two delves into Himawari and Hayato's past. Will new secrets be revealed? Will Himawari finally find out about her past and the mysterious ninja that saved her when she was little? (Source: ANN)

Fam and Ihrie are willing to do almost anything to make a buck. So when these debt-driven damsels discover the potential profits to be hand in recovering a particularly dangerous mystical object, it means mortal peril for an entire civilization. There's no guarantee that they'll live long enough to squander the fabulous wealth they've been promised, and danger lurks around every turn as they cross dark seas in pursuit of legendary evil. Haunted by an unspeakable curse, plagued by doomsday prophecies, plotted against by untrustworthy traveling companions and looked in desperate race to gain the Ultimate Power, Fam and Ihrie are the Ruin Explorers! (Source: AniDB)

Two bonus episodes that take place during the course of the series, approximately halfway through it seems. They are entitled 'Everything you always wanted to know about Nereids (but were afraid to ask)' and 'Heaven can wait for Maia Mizuki'. These stories are more lighthearted and comedic in tone, bordering on silly.

Bundled with Hiiro no Kakera Taizen, a comprehensive illustration book on the six-year history of Idea Factory's Hiiro no Kakera romance game franchise, the OVA reveals the private lives of the five main characters.