[Check-in System alternate timeline]
Yonezawa Yuu accidentally became bound to a plot check-in System.
The System told him that as long as he stayed by the side of the target, who was still weak, followed him, witnessed his weakness and growth, watched him become the Godfather of the underworld, and checked in at all the key plot points, he would receive a generous reward.
Yonezawa Yuu was tempted.
For this, he accepted the System's brutal training.
Then one day, the System brought him before the target.
The target was standing atop a giant statue, his face smeared with paint, waving a brush and loudly declaring to the world:
"Someday, I'm going to become Hokage!"
Yonezawa Yuu: "...?"
The good news was that the mission hadn't changed.
The bad news was that the person had changed, but the mission hadn't.
In other words, in the ninja world of "the mission comes first; only an idiot cares whether their comrades live or die," he had to become a member of the Black X Party who considered his comrades an honor.
...Seriously? Am I really supposed to do this?
Theme: Comrades are an honor you must never surrender
