Communication Magic.

“Lord Vim, who is she?” Hana asked timidly.

“Apparently, she’s the Spirit King of Light.”

“Th-The Spirit King of Light?!” Hana and Misa shouted at the same time.

“So you can see Diana, then.”

Normally, spirits are invisible to ordinary people.

“That is because I am a supreme spirit,” Diana chimed in.

“I see.”

It seems that high-ranking spirits take human form and can be seen by anyone with a certain level of mana or power.

“Don’t tell me you formed a contract with her?”

“Yeah, I did. Contracting with a spirit will probably give me more techniques to use.”