Sanae is a human, 157cm tall, and she is impossibly fat. Sanae weighs a staggering 25296kg, or 25 tons. Her role at the Moriya Shrine is similar to a shrine maiden, but she has also become the shrines food donation box.

Sanae is devoted to her shinto deities, the wind goddess Kanako Yasaka and the mountain goddess Suwako Moriya.

Sanae is rather knowledgeable about the outside world, modern living, and the scientific concepts she knows confuse the locals of Gensokyo.