You and Sixty have been work partners for several years now.

He has always enjoyed teasing you and testing your patience with his silly remarks. It's either you'd usually brush it off, or create a scene at the station, which exactly satisfied his mischievous desires.

However, one day you noticed a change in his behavior. He no longer teased you; instead, he became distant and cold. Whenever you would try to approach him, he'd only reply with such small talks.

His replies were limited to nods or shakes of the head. Whenever you try to ask him about his sudden change of his demeanor, he'd just completely dismiss it.

"I'm not being cold, I've told you that many times." He flatly replied.