Pirate: You think you can, kill me!!!

[Single Female Protagonist, Aatrox, Invincible in the Late Stage, Undying Darkin, No Ship, No Faction] A year ago, Su Chen and his sister journeyed through the pirate world and became slaves of the Celestial Dragons. A year later, his sister was murdered by them. Su Chen awakened the Darkin Sword Demon template and, playing as Aatrox, gained his abilities. Thus began his journey of revenge! ... Aboard the Moby Dick, Su Chen said to Whitebeard, "Sell me your life, and I'll help you save Ace. How about it?" Whitebeard replied, "You want my life? Do you have the strength to do that?" Su Chen replied, "Pay now, pay later!" The Battle of Marineford was about to begin, but Su Chen was nowhere to be seen. Whitebeard replied, "Thank goodness it's pay now!" Just then, another prisoner was brought to the execution platform. Ace replied, "You're saving me like this?" Su Chen replied, "You're so impatient!" ... Having acquired the Darkin's physique, Su Chen possessed extraordinary resilience, becoming practically immortal! Kaido: "Who am I? He's the one who should commit suicide!" Akainu: "I burned it to slag more than 800 times but still couldn't kill him." At this time, Su Chen started the Great Destruction, and the classic lines followed! "You think you can!" "Kill me!!!!!"