江口 セーラ

Sera is a third-year at Senriyama Girls' High School. As a second year she was the teams ace player and did very well during the inter-high tournament. Sera appears to be pretty cheerful and a tomboy. The reason she joined mahjong club at first is that so she doesn't have to wear her school uniform at school (implying that she is embarrassed to wear a skirt), she is very friendly not only to her friends but also to her opponents as shown during battling with Ako Atarashi. Her playstyle isn't anything special: Sera plays with the intention of winning big but slow hands.