Brother, You're a Superhero

"You... you're... my brother?!" Without any hesitation, the boy hugged him tightly. "Brother..." However, he pushed the boy away harshly and looked at him with a calm expression. However, the boy's eyes were still warm, and there was a naive and surprised smile on his face. "Brother, you must be my brother! Look, we look exactly the same. I... I'm Zac..." However, before he could say anything, those people who were after him came in through the window. Therefore, he ignored the little boy and killed the three people in front of him with his dagger. Turning around, he looked at Zac, who was trembling. Without any expression, he said, "Now, do you still want to call me brother?" "Knock-knock!" There was a knock on the door. "Zac, we heard something in there. Did something happen? If you don't come out within three seconds, please forgive us for intruding, 'cause we'll think that you're in danger and rush in." Soon, Zac placed his finger to his lips, signaling for him not to speak. "I'm f