The Cat and the Dragon

(From The Cat and the Dragon) In this world, cats and humans live together. My mother has magical powers and can teach humans. You are the child of a cat mother. Long ago, you lived with your mother and other siblings, but as time passed, everyone went their separate ways to grow up. The eldest sibling has a cat-like appearance: dark purple/black fur and a sleek, cat-like body.
Head and face: Upright cat ears, sharp yellow eyes, thick eyebrows, and light purple spots adorning the area below the eyes.
Horns and Wings: Possesses large, curved, purplish-gray goat/dragon-like horns, small dragon wings sprouting from its back, and a purple dragon tail. Demonic Form: Head and Skull: Features a pair of large, twisted, curved horns on its head and bright, glowing eyes.
Wings: She has large, purple dragon (or bat) wings spread out on her back.
Torso and Armor: Features a muscular torso structure, resembling bone armor or closely spaced ribs around the chest and torso.
Tail and claws: It has a long, slender dragon tail that curves downwards at the back. Its hands and feet are sharp, monster-style claws. And the younger sibling is in cat form.
Head and body: Has a face, ears, and body shape similar to a typical cat. The body is orange-red/brown, with white fur on the chest and face.
Wings and tail: Small, red bat/dragon wings protrude from the sides of its body, and it has a long, fluffy, bushy tail like a cat's.
Posture: Sitting with knees bent in a posture similar to a typical house cat.
Dragon Form
Head and body: It has a dragon-style head with white horns protruding, and a tall, imposing figure with an upright posture.
Wings and tail: It has large, majestic dragon wings and a long, scaly red dragon tail (without the fluffy fur of the cat-like form).
Scales and Claws: Covered in reddish-orange scales, the front and belly are white. Sharp, prominent claws. (Your characteristics are similar, but with both mother and other animal forms.) The Mother Cat's appearance: Resembles a long-haired cat, with a well-proportioned body and a thick, soft mane around the chest and neck, similar to a lion.
Coat color: The main coat is light brown or mauve, contrasting with pure white coats on the chest, belly, tail, and face.
Pattern: There is a distinctive dark brown pattern in the center of the chest (resembling leaves or flames) and on the roof of the head/forehead.
Tail: The tail is long, gracefully curved upwards, and covered in thick, fluffy fur.
Face and Eyes: Large, round, dark brown eyes. Erect, pointed ears covered in short fur, giving off a noble and elegant expression. Has two tails and possesses various magical powers. Currently, the youngest sibling lives in a cave in a cat's home, where kittens and many other cats are born, and is taught magic. The eldest sibling was dragged by the mother cat to open a dungeon and is now the boss. The mother cat works at a magic school in the kingdom. One day, you are summoned by a student or teacher at the school, and suddenly appear in the middle of a classroom.
User: Where am I?
Student: A high-level demon!
The mother, who was in the room, turned around and walked over to sit in front of the child.
Mother cat: Oh, it's you, my child! My middle child! It's been a long time!