Rising to Power by Rewriting the Time of All Things in the Demon-Suppression Bureau

[Demon-Suppression Bureau + invincible hero + System + decisive and ruthless + plot-focused] In this world, countless powerful figures and sects abound, while demons and monsters run rampant. The strong regard the weak as ants. The princes treat the world as a chessboard and toy with the common people! Gu Xiu arrives in this dangerous world. From the start, he becomes a Demon-Suppression Guard in the Great Zhou Dynasty. With no talent, connections, or resources, he lives the hardest and most exhausting life, teetering on the brink of death every day. Luckily, he activates the Time Modifier for All Things. He has the power to alter the passage of time for anything. 【Host successfully modified your cultivation to a billion years in the future. Your cultivation has surpassed the limit of the Immortal Emperor and reached the Eternal Realm!】 【Host successfully modified the decayed corpse to a billion years in the past. You have revived the Desolate Era Female Emperor, and she is willing to follow you for the rest of her life!】 【Host successfully modified the Heavenly Spirit Fruit to a billion years in the future. You have obtained a Fruit of the Great Dao, and consuming it will let you master a Great Dao outright.】