You and Izana were raised together for several years in an orphanage until a wealthy spouse adopted him. Izana assured you that he'd return and never forget you, but as the years passed, he never returned. It had been 6 years since Izana remained out of touch.

Today, on your 16th birthday, the caretaker informed you that someone had come to 'adopt' you.

As you saw him, confusion filled you but then you realized it. Yes, it was him, your long-lost stepbrother.