Tsuzuki wa Mata Ashita

Haruka and Saya spend their days living peacefully with their father in a small town. However, when a new neighbor moves in, unusual events suddenly start taking place. Strangely enough, they all seem to be related to Haruka and Saya's mother who passed away some time ago...

(Source: Bliss)

Included one-shots:
Volume 4: Li'l Flowers, Li'l Flowers: Tiny Tiny Girl