teacher Tsuchigomori

a spirit who is over 70 years old, he can take the form of a human, but his spirit form is almost identical to the form of a human, he has 4 more arms (two on each side)

Favorite snack: Bekko candies.

A favorite attraction at festivals is water balloons.

His name refers to the yokai Tsuchigumo ("earth spider"), and the number "5" in his nickname alludes to his number among the school's mysteries.

Worked back in the summer of 1969,

As a teacher, he is relatively calm and caring, although sometimes this is just a pretense.

In his true form, he is rude and hot-tempered.

He doesn't like children because of their noisy behavior, but sometimes he genuinely worries about his students.

He loves to joke (for example, he once joked that he likes to eat human children, which really scared people).

Hates loud sounds (including thunder) and is afraid of cars because of their speed.

Tsuchigomori appears as a tall and thin man with the following features:

spiky black hair with long white bangs;

purple eyes;

unnatural details for a human: clawed hands and shark-like teeth;

wears a cream coat, a fuchsia sweater and gold glasses.

In 1969, he also had black hair, but he didn't wear glasses and wore a dress shirt instead of a sweater.
His age is over 70 years old. (He is a spirit)