He´s the second child of Hida Nayuta, younger brother and lover of Hida Reiri, adopted older brother to Hida Setsuna as well as the first-person who obtains HHG on Earth/Lemuria and the only male HHG pilot on Lemuria. After being expelled from Ataraxia by his mother, he lived as a regular student until he was called back by his sister after she learns his secret abilities and made him the captain of Amaterasu.