スー家人 (Suu Kaijin) (hereafter スー) is a En'enra (煙々羅), of the second type: a human deceased and transformed into a yōkai (妖怪).
In her past life, she was a university professor, biologist and herpetologist.
Biologist specialist in herpetology then competition to become a teacher
One of his greatest passion in life: Frogs.
She died at the age of 26, following a fall in a tropical forest in South America, looking for yet another new species of frog.