It doesn't matter if God is unfair!
The protagonist is Naruto, whose CP is Orochimaru, who is the main attacker.
As a villain, the protagonist is of course the villain! Notice! The protagonist is a real villain, so there's no need to be surprised if it's disgusting to watch.
For fun, there is also a time traveler... This time traveler happily wanted to accept Naruto as his younger brother but was slapped in the face.