Sayoko Arashiyama

Arashi is Hajime's first friend he makes in the Ark. She and Hajime have a great rapport, as they often play together around the village, go on adventures with one another, or enact and improve silly skits that they understand but bewilders onlookers.

She has a good sense of humour and a strong sense of righteousness. She is extremely close friends with Kaja. Arashi is very forgetful and is not very responsible, and does not think twice before doing things and especially does not weigh out the consequences of her actions.