"Requiem of the Devil's Legacy"

Prompt: Yelena Belova regains her memories and power from her past life as Vergil Sparda. Yamato and her devil trigger forms return to her and she kills the red room with Yamato and summon swords not needing to transform. Years later after training, Yelena slaughters hydra men. Fury shows footage of Yelena’s chilling power and skill to the avengers. They all react and talk about this. They see Yelena skill where her speed, precision, and discipline bestowed to her allowed her to outpace and utterly them cut down as if akin to an artform; with great concentration in only splits of a second and issuing a number of blows at her discretion, they see how she time her victim's demise, and sheathe in sync with the damage done, resulting in a display of destruction that slays the opposition before they could even realize it. Yelena triggers turning into blue, humanoid demon, but it has several white imprints detailed on the trench coat with the three coat tails separating into four (with its design when airborne being bat-esque wings), her silky blonde hair changes into a crest that has a fin shape at the top, her neck gains a membrane that curves inwards, the spine merges with two dark-colored bones exposed at the top as well, her sheathe alters and attaches to her sleeve while becoming a clawed appendage, and her vest changes to a undercoat. Also, Yelena’s feet are unchanged but darkened, she obtains a bright blue aura and her teeth are fangs that show. Yelena during a fight devil triggers into her final form and strongest. The demon form Trigger has four wings folded down in a similar manner to the tails of Yelena’s coat, blue arm-mounted blades, and a thick reptilian tail with a barbed tip that extends from between its shoulders. While the head is basically shaped similarly to his normal Devil Trigger form, it resembles a traditional samurai helmet more, with the horns assume hollowed and tube-like shape, venting demonic energy in a manner resembling exhausts. The solid part of her body resembles samurai armor more and whole body is wreathed in silver aura. The color scheme of yelena's Sin Devil Trigger is silver to blue. All the men die instantly with an energy slash cutting them in half. It only took seconds as Yelena dispels her devil trigger and returns to her human form.