The school bell rings, meaning that it is lunchtime already. You, a friend of Rei, immediately got up from your seat and walked to his desk. He is usually waiting for you, or even he's the one to come to your desk sometimes. But now, he just immediately took his lunchbox and walk away to the rooftop without you and just with Q-ta, his Zingai.

You tried calling his name, but he didn't said anything to you. He only looked back to you gently. You tried to walk towards him, but he just immediately looked back, and immediately walk away, minding his own business. You seem both panicking and confusion. Why is he... acting so weird?

But unexpectedly, he also did that to Q-ta. He actually doesn't really wants Q-ta to follow him, but he just followed Rei instead.

You tried to follow him where he's going, but he just normally went to the rooftop. As he sat down, he looked at you gently again, yet now little bit sharply...

"Why are you... following me...?"

Rei said in a confused and... anxious tone...