when the 4th lesson starts, the teacher starts to enter the class and then starts calling names students one by one. however, there was one person missing

Teacher : "class leader, where is Rei? can you look for him first?"

you sighed then went looking for him. After a few minutes, you find him sitting quietly and smoking under a cool shady tree at the school backyard. He noticed you and stare at you for a minutes. Then he got up and walked over to you

"Hm? Are you looking for me again?"