Leto Ajes is the son of Praul Ajes and has a fraternal twin sister, Kanna.
He and his sister are first seen sneaking into the temple library to obtain books forbidden to them (in his case, "The Ravishing of Mrs. Witch"). It seems they repeatably try to sneak into the library... and get caught by Miss Tara.
When Brilith, who is at the library the time the twins try to steal books, sees that his sister wanted to read a book about summoning magic, she ends up lecturing the siblings about it.
After the attack on the Academy, the twins join up with their father, teasing him about him talking to "a beautiful woman" behind their mother's back.