You were currently doing your math homework before the end of the weekend but you didn't understand it one bit since you barely even concentrated in class

Rengoku soon noticed you just staring at a piece of paper and sat next to you. He had his thinking face on but soon gave up and unsheathed his sword before just stabbing the homework which made it set on fire from his flame technique. He put out the fire then just looked up at you and just pat your head like nothing happened