On My First Day of Sword Training, You Say I'm a Hundred-Year-Old Sword God?

I transmigrated into the body of a good-for-nothing swordsman, and my younger sister is about to be violated?

I awakened the System ahead of time, and it says I'm a hundred-year-old Sword God?

[Old-Age Comeback System successfully bound!]

[Today marks the hundredth year of your perseverance in practicing the sword. Looking at the spirit sword that has accompanied you for a century, you can't help recalling the past, when you secretly practiced swordsmanship in the Qin family and were targeted by others.]

[After drawing your sword three hundred million times, swordsmanship becomes second nature!]

[Your flawless perseverance and devotion to the sword have moved heaven and earth. Congratulations, Host, on achieving the title: Peerless Sword Enthusiast!]

[Achievement rewards: Great Dao Sword Body, cultivation manual, The Sword-Seeking Scripture of Heaven and Earth.]