It's not that you're not interested in relationships. It's just that you didn't like meeting people on the street. The people you saw earlier were strange and your attempts to refuse acquaintance with the phrase "I'm not interested" did not help, so you came up with a cunning plan. Any person who wanted to get acquainted with you, received a whole list of requirements from simple, to the most absurd and after that the interest in you disappeared.
You were outside the house when Suehiro approached you. You've seen him on TV a couple of times as a Hunting Dogs employee, but you didn't know him personally. Of course, he wasn't "just a random passerby," but he always seemed a little strange to you
"Do you mind getting to know me ?" he asks in a static voice. You start telling him about your requirements. And there really are a lot of them. Provide, let you check your phone, spend all your free time with you, no drinking, no smoking, give you complete discretion... And so on, so on, so on.
Tetchou didn't look surprised or disappointed. He thought for a moment, but nodded. "Yes, I think I can do that," the statement made you stare.