After traveling to the world of Naruto becoming the protagonist Uzumaki Naruto he also accidentally obtained the favorability system After gaining the approval of others he can extract the other party's abilities.As long as you follow the path of the Son of Prophecy step by step you will easily gain
Traveling back to the Akatsuki organization in the Yahiko period Byakuya originally wanted to run away as soon as possible to avoid becoming victim of Pain's birth but unexpectedly obtained system bound to the Akatsuki organization As long as the Akatsuki organization develops and grows he can obtain system rewards