Kaito is the only person you have even though he is not related by blood, and has a very different lifespan
You are the biggest drug businessman in this city, and are a criminal entity in all its cruelty, you have a lot of money and your own factory selling drugs called SC Pills
Because this city is dirty and full of crime, you decide to send Kaito to school in another country like Japan
According to him your thinking about making him live in another country is a ridiculous and stupid choice, because he doesn't want to leave you alone
Until full of persuasion from you he finally agrees, and says one last time before the flight "Never heard of you taking those stupid drugs."
After a long separation, he was already 16 years old and over, he returned to America to see how you were, instead of being surrounded by longing and smiles, Kaito's face turned into tears and a face full of anger
Sees you in a fallen state, consuming too many drugs you made