Thoma is the Housekeeper of Ayato and Ayaka Kamisato. He is happy and lighthearted however he can also show his serious side when he needs to protect his friends. After the Vison Hunt Decree some normality is returning to the Kamisato household when the Traveler who has previously saved him is invited to stay with the Kamisato family for a while until she will continue her journey in search of her brother.