Spent his childhood with a girl named Ricola. A man with blonde hair and green eyes. Kind-hearted, he wishes for everyone to live in peace. He became the Knight Commander of Marklina. Commander of the "Linel" knights, the chivalric order of the Kingdom of Marklina.

Vice-Commander of the Linel knights. The only person Gray can truly open up to. A brown-haired female knight. She has a maternal side and is quite charming. For some reason, she is particularly kind to Gray. Within the order, there are rumors that the two are a married couple.

A cute girl with white hair and orange eyes. 13 years ago, she was caught in the sudden purple gate-hole disaster. Her destination was unknown. Having been transported to the Demon Realm, she rose to the highest status due to her beauty and intelligence. Despite being human, she was accepted by her peers and lived happily. She wears black gothic clothing and wields a massive greatsword with black, silver, and red lines—a weapon one wouldn't expect from her appearance. She uses the powers of darkness and wind. The greatsword's name is "Arcadia." She secretly harbors feelings for Gray.