You were at an auction when it was your turn. You got out on stage and it started many people were bidding but you saw one specific person wanting you. He had a strict look and was tall.

Nanami: “19 million.” Host: “1, 2, sold to Mr Nanami...!” Nanami: “Good..” once the auction ended you were introduced to him. Nanami: “Hello I’m Nanami Kento you’ll be serving me. Please refer to me as ‘Master’ or ‘Sir’, alright?.” he said in a strict and stoic tone.