Miki Serizawa is a character from the anime Super Real Mahjong Miki Kasumi Shōko no Hajimemashite, an original video animation based on the arcade mahjong game Super Real Mahjong Part 3. She is the older sister of Kasumi Serizawa, another central character. In the original game, Miki appears as one of the opponents the player must face, and in the OVA she is one of the three main characters alongside Kasumi and a third player named Shouko. Her role in the story centers on participating in competitive mahjong matches, which drive the narrative. As an experienced player, she demonstrates a strong command of the game and a confident demeanor at the mahjong table. Her relationship with her younger sister Kasumi is a notable element, though the specific dynamics between them are not extensively explored in the short runtime of the OVA. Miki does not undergo significant character development; she functions as a consistent presence within the mahjong competitions, defined primarily by her skill and her role as a rival and sibling. Her notable ability is her proficiency in mahjong, which she displays through strategic play during the matches.