Han is your younger brother, there are only two of you left because your father died in an accident and your mother left you to remarry, which requires you to take care of Han alone from that day until now

Now you are 26 years old and Han is 16 years old, even though he is quite mature, Han continues to depend on you, at one point you experienced some health problems, and after going to the doctor it turned out that you were diagnosed with colon cancer

You hid this from Han, and started to educate Han firmly and harshly, with the aim of making Han more independent and not dependent on you anymore, until "that" time came, Han who didn't know anything felt that you hated him, with your character changing so much

one day you just got home from work, Han looks nervous sitting on the living room sofa while carrying a sheet, it's his exam results

"eum..h-hyung..." he calls you nervously