Shadow Killer in the land of Daeho

When Seven fell from the bridge he thought he was going to die, but before he excepted his fate, he saw a glowing orb on the water, curious he reach for it, but he did he was transported in a land he has never heard before, the orb not only transported him in an unknown land, it also turn him back into a ten years old. Now regressed back to being a ten years old and in a a land where no even knows him, how will he navigate in this new land? Will he continue the life of an assassin or start a new one?

Before we begin I just wanna say that I don't own scissor seven or alchemy of souls. English is not my first language so if you find some grammar mistake, I apologies for those mistake.