Kirakira no Natsu

Kirakira no Natsu (ささだあすか短篇集 きらきらのなつ)
Shinobi no Iroha (しのびのいろは)

After her great great grandfather (or great great great grandfather, our heroine can't seem to remember) is saved by a member of the Kumezaki family, a ninja by the name of Iroha dedicates her time to protecting the girl of the family, Sakura. The series revolves around their exploits.
Jitensha Blues (自転車ブルー! )
Hoshizora☆Factory (星空☆ファクトリー)
Pokapoka no Fuyu (ぽかぽかのふゆ)