After transmigrating back to when he was ten, Rei Furuya quietly clenched his fist once he accepted that he really had returned to the past. I have to make up for the regrets of my previous life!
Then a System claiming to have led him through time and brought him back appeared. When Rei voiced his doubts, the little white ball explained:
"Billions upon billions of people didn't want Mr. Furuya to die. Their wishes brought you back to life, and I came into being to help you have a better future!"
Officer Furuya had seen plenty, but this kind of fantastical scenario... "What can you do?"
The little white ball proudly put its hands on its hips. "I'm the [Clone System]. I can give you countless clones!"
Officer Furuya paused. "You can only make clones?"
The little white ball replied, "I chose this function based on your previous life's profession. I'll give you multiple clones so you won't have to worry about being unable to help when someone needs you!"
Officer Furuya was won over in a second.
"And as long as you have enough energy, you can have as many clones as you want!"
Countless clones...
And so, Officer Furuya gained several brothers who made a name for themselves in all kinds of fields. If the original is Rei Furuya, then could the clones be Furuya One, Two, Three, and so on? Take that police officer, that detective, that bottle of liquor, and all those people in every kind of profession: aren't they all blond and dark-skinned?
With so many identical people, are they really brothers, or is there something else going on that can't be spoken of...?
[Clone System]
1. Clones can be created without limit.
2. Clones and the original share sensations.
3. Clones can never defy the original.
4. We share memories.
5. ...
Theme: There is strength in numbers.