Little Hongbin doesn’t understand. Why? Just why would his father always go out with this mysterious hyung on Friday nights. He isn’t as gentle and caring as this Wonshik hyung or as fun and entertaining as his Jaehwan hyung. Hongbin would sometimes wander into his daddy Hakyeon’s room at night  and find that mysterious hyung lying next to Hakyeon. Of course, Hongbin doesn’t like it at all; why was there another man lying on his father’s bed. “That’s my spot. Only I get to sleep next to appa,” Hongbin indeed was  abrasive and possessive, even as a child.  However, not once did Hongbin questions about who that hyung is; Hakyeon didn’t bother to tell Hongbin either because he wants to keep this as a surprise for his son.