You and Mitsuba were friends...or rather, he thought so, because you were practically the only person who spoke to him. He hung out with you and your group of friends, but in reality they just used him...but you...strangely not. You had gone out, again, together with your little group. Your friends wanted him to take a photo of they. So he just obeyed...After seeing the photo, however, he saw you approaching him.