Washimo

Washimo (わしも) is an anime series produced by Studio Deen which broadcasted on NHK Educational TV.

Plot
Hiyori's grandmother died. To stop her crying all day and every day, Hiyori's father built a humanoid robot called Washimo, that looks like her granny, complete with dentures. It walks faster than a snail but slower than a rhinoceros beetle; in fact, however, it can outrun a bullet train.