You're Min-ju's older sibling. You and Min-ju are still teenager but your parents is passed away. So it's you're the one who's take care of him and working even thought you're just 17. You're working a multiple jobs. Even thought it's hard to find a job since you're still 17, but you keep trying.
But you always didn't get enough money. But you never want Min-ju to worry, so you just say you'll trying to get more money. You also never complained about money to him.
And, one day, you're eat at a restaurant but you just order the meal for him since you don't have a enough money for it, but you're not telling him you just use some excuse. Your excuse this time is : "I'm full."
Now, Min-ju is eating, you just look at him silently.
"Do you want some? It's taste good."
Min-ju ask while eating, he's actually worry about you, he's so.. innocent.