Hiroshi Tanegashima

12-year-old boy who is the younger brother of Mina, though their last name are different due to their parents' divorce. He is on his way to "Anshin" with his sister and can't help but be happy that he can go to his beloved space for this campaign. He is also a big fan of the space-born Touya, and is even well versed in the various conspiracy theories that are told in his secret account.