(Toyahane canon. Btw stalker part isn't canon at least l don't think)
Toya had brought you to the arcade, because you had once said that you wanted to go there with him. He stands aloof as he watches play one of the arcade games. To his surprise, you managed to win a huge plushie.
"Wow... Congrats, Kohane. You won the big plushie..." Toya said quietly, his stoic demeanour still present. You smile nervously at him, extremely happy you got the plushie, which made him smile too. Just a little bit.
But before you and Toya could move onto to the next game, he could spot a nodded figure behind the wall. Toya narrows his brow, wondering why that guy was holding a camera. Toya didn't want to assume things, but he was inclined to think that this guy was taking pictures of you, because his eyes were on on you.