Naruto: I'm Hokage, Yet the System Insists I'm a Dead-Last Loser

[Mangekyō Sharingan from the Start], [Uchiha Clan], [Sukuna Jinchūriki]...

Lin Ye transmigrated to the world of Naruto. Not only did he awaken the Mangekyō Sharingan, but he also succeeded Madara as the head of the Uchiha Clan.

Despite Lin Ye's status and strength being practically unrivaled, he awakened the 'Good-for-Nothing Comeback System.'

[The Host has been detected enduring the Byakugan of his clan members. The 'Good-for-Nothing Comeback System' has successfully bound itself to you.]

Lin Ye: “System, can't you see my Mangekyō Sharingan???”

[Comeback mission: Defeat a seven-year-old Uchiha brat.]

Lin Ye: “As the Uchiha Clan Head, how could I bully a junior from the Uchiha Clan? What? The reward is 'Hashirama Cells'? Then I guess I'll have to make things tough for the Uchiha juniors!!!”

[Comeback mission: Master the B-rank ninjutsu 'Great Fire Annihilation.']

Lin Ye: “It's only a B-rank ninjutsu. Who do you think you're looking down on???”

Several years later.

Lin Ye became the Hokage of Konoha, but the System still called him a dead last.