The main character with high intellect and a photographic memory. He wants to be an astronomer who works at NASA due to a promise he made with his childhood friend Kuroneko. After meeting the magic users, he decides to provide shelter to them at an abandoned observatory despite knowing that their pursuers have orders to kill whoever comes in contact with them, usually coming with plans to have their location concealed while looking for ways to provide the medicine they need to keep living while helping them to live their lives as normal as possible.