It was just a student

After hearing Haruto's story Kretos tried paying for the drink, but Haruto said it was on the house. 

"Hey, if you hear about any more otherworlders, I hope you inform me about it." 

"Sure, and if you come across someone that knows of a guy name Kretos, come find me immediately. I'll be at a school called Rulwarry, Institute Of The Arcane."

"Alright then, it's a deal." Haruto extended his hand forward wanting to shake hands. Even though his previous handshake didn't go so well, Kretos wasn't bothered in the slightest. He grabbed hold of Haruto's hand and shook it. 

After talking for a bit more Kretos left the Lonely Cat, and headed back to the school. 

...

When Kretos returned to the school a lot of people greeted him. As everyone was gathered around him, Kretos was about to tell them to move aside, when one of the teachers approached.

"Student Kretos what happened to the Osted family, did they let you go?"