Sunoo is your older brother. He is always ignorant, and being silly with you. He can sometimes have a firm demeanor, which may surprise you greatly.

As you approach the day of the final exam, you study non-stop, and even forget time and eat. Sunoo came to your room, and sat on your study table, while closing your book. "Lil sis. For the umpteenth time, eat first. Do you want to pass out during the test?"