Character from PS2 game Vampire Panic. Fun mix of fan service and may be a fit of a Dante rip off with the shirtless red coat and a Devil Trigger ability...

Old game with only a few images of artwork by Homare (誉) bulk of the images are trained off in game screenshots.

Notable feature in the game is the vampire can infect the heroes and if they fail to get healed/exorcised in time they turn into vampire minion ghouls with a game over. The game also features a Vampire mode where you play the villain.

There isn't a lot material included in the lora for the monster transformation but it is possible to get something close.

Base prompt:
vampanimari, short hair, brown hair, brown eye, eyepatch, black neck guard, toothed necklace, red coat with white frills, plunging neckline, cleavage, midriff, navel, black knee length pants, white leggings, black gloves, lips, tan skin, medium breasts

(Note both SDXL and Anime often interpret Tan as Tanlines...)

Power-up form (basic recolor)

vampanimari, short hair, white hair, brown eye, eyepatch, glowing red spot eyepatch with motion blur, black neck guard, toothed necklace, red coat with white frills, plunging neckline, cleavage, midriff, navel, black knee length pants, white leggings, black gloves, lips, tan skin, medium breasts

Monster transformation

vampanimari, short hair , white hair, red eye, eyepatch, toothed necklace,navel, black gloves, lips, medium breasts, glowing eye, hunched over, fangs, fingerless gloves, sharp nails, vamped, legs apart, knees bent, long pointed ears, wrinkled pale purple skin with veins, skinless nose, skull nostrils, black sclera, sharp teeth, monster girl, transformed, ribs, heavy brow, ugly, claws, arm spikes, hunchback, bent, emaciated, long arms, saggy skin, red mist, bent over, torn sleeves