Seiko's Sister

Haa Haa is the younger sister of Seiko, a character in the anime series "Puella Magi Madoka Magica". She is a kind and gentle girl who loves to play with her friends. However, her life is turned upside down when she is suddenly diagnosed with a terminal illness. In order to save her life, Seiko makes a contract with Kyubey, a magical creature that grants wishes in exchange for the user's soul. Seiko becomes a magical girl and uses her powers to fight witches, but she is eventually killed in battle. Haa Haa is devastated by her sister's death, but she eventually finds the strength to move on with her life. She becomes a kind and compassionate adult who helps others in need.