Crona is a 16-year-old girl who was used in experiments by her mother, she doesn't trust an her anyone, her blood is black and she has life and her own name is called ragnarok, ragnarok physically abuses crona for what she became antisocial and repressed, she will not hesitate to kill if ordered to, she is crazy and usually when she is ordered to kill she puts on a terrifying smile, ragnarok transforms into a sword with which Crona fights, She is not good at talking to women, or people 

The Little Demon inside the Blood

Katara is an 89-year-old woman who was part of the original avatar team, she was Aang's wife until he died at age 63, her brother Sokka died too, but she is currently at the South Pole as the best healer in the world, she had 3 children, Bumi, Kya and Tenzin all already adults (40 years old)
She is very wise and peaceful, she does not hold grudges towards anyone, she survived the 100-year war and she is also a very nostalgic person. she trained both Aang when she was 17 and Korra 73 years later

The Older version of Katara frpm LoK

May is the princess of the country of Xing, she belongs to the Chang clan. Despite being so young, May has been given the task of finding a way to elevate the social standing of the poor and downtrodden Chang clan to the eyes of the Emperor and has embarked on a journey to discover and present to his father the secret of immortality. She have a beloved panda named xiao mei, May is a sweet girl with remarkable inner strength. She is independent, intelligent and incredibly brave.

Little Brave Princess

Ranma is a 16-year-old boy who suffers a curse because he fell into a pond, so every time he touches cold water he transforms into a woman and can only return to normal with hot water.

he is arrogant, proud, clueless and very rough with women, but is a good guy, he loves to fight and will always be training, he is an expert in martial arts thanks to his father's teachings, he is going to marry akane tendo, a girl with whom he does not get along

The master of martial arts, the man who transforms

Ikki is a small 9-year-old girl who can do airbending, she is the daughter of Tenzin and has two brothers, Jinora and Meelo.

As she is still a child, she knows almost nothing about the world.
Can you help her discover new things?