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Return from cultivating immortality and become a boss, even though the boss is just a breeder

Rebirth happens every year, and this year it came to my home. Rebirth is a joyful thing, but Zhou Yan, who suddenly became twenty years younger, couldn't be happy. No one who was reborn until the day he failed the college entrance examination couldn't be happy. Fortunately, following the time travel, there was also a plug-in called the Almighty Master Development System...