Awaiting My Savior (Hunter x Hunter)

Killua is a young twelve year old boy, formerly an assassin in the famous Zoldyck family. The family was known to consist of the most skilled and experienced assassins in the world, and they were often referred to as 'killers' - Killua couldn't stand that. He wanted to live a normal life as a normal kid, but anyone with a brain would know otherwise.

Killua's lost in the dark, surrounded by waves of despair, and the only one that can save him is Gon - his dear friend, along with Kurapika and Leorio, who become a great help along the way.