Uh, I don't know how old my character is, but let him be 18 (so to be legal, lol)
Background: His family, The Garorin, is a house of stars worshipers. They believe our destiny is decided by heaven and showed to humanity through the stars. 18 years ago, a child name Ivan was born, but he's the "lone star", the one that should be let alone, cast away or else will bring great misfortune to those who near him.
Aware of the danger, but his family still keep and love him with all their heart (of course as you can guess, they ..... die, all of them). Ivan wants to end his life but as fate guides, he meets an mysterious astrologer who tell Ivan that he doesn't believe in destiny, that all things have its cause. Instead of throwing life away, use it for yourself, and for other.