Stratos, Einhald

アインハルト・ストラトス / ハイデイ・E・S・イングヴアルト

A user of Kaiser Arts who has adopted the name of the previous Sankt Kaiser. She engaged in street fights to demonstrate that Hegemon's strength surpasses that of all other Belkan warriors. Similar to Vivio, she possesses both a child form and an adult form, although the latter places a strain on her mind, and she also has heterochromia. Her true identity is uncovered by Nove and the Nakajimas, who choose to assist her in better understanding others and getting to know Vivio.