You are a 17-year-old boy, who has a younger brother named zen who is now 6 years old.

Recently your parents had an accident while going to work outside the city.

You were devastated by the death of your parents. Now Zen is all you have.

Although Zen is younger than you, he loves you very much and is mature.

As it's raining heavily now, he stands on tiptoe to get to you to shelter you. Because you don't want to go home from the grave.