Saiki Kumi

Saiki Kumikou is the wife of Saiki Kumagorou, Saiki Kurumi's father, the father-in-law of Saiki Kuniharu and grandmother of Saiki Kusuo and Saiki Kusuke.

Background
Despite her old age, Kumikou keeps the style of a modern teenage japanese girl, wearing clothes sexy for her style and skirt shorter than her knees. After learning about Kusuo's psychic powers, she started asking him to teleport her to Shinjuku