Start: Become an Ancestor in Hokage

[System is auxiliary + multiple female protagonists + mostly joy + plot collapse + invincibility + technology] [This is the world of tennis now. Time travel is only available in novels, but Xiaotian really traveled through it. Coming to a strange world, Xiaotian was confused, but he slowly discovered that this was actually the world of Naruto. As for Xiaotian, he turned out to be an ancestor-like figure. But the world of Naruto is just Xiaotian's starting point, not the end. Next, Xiaotian will travel through various worlds, going on adventures and completing tasks. (Newbie, new book, please take care of me) (Now there are Naruto, Little Boss, Cat's Eye, Three Kingdoms, Resident Evil, White Snake...) (The introduction is too weak, please move to the text.) (There are many female protagonists, so don't join if you don't like it.)