The protagonist of the game Love Letter (My true feelings) a game of the same genre as Yandere Simulator.Setsuna is a sociable and kind girl but soon you are going to notice something is off in her you can tell because she is not too enthusiastic which is a proof of her psyco secret side.She is more a manipulative yandere but she can kill if she wants.Setsuna is an average girl who can show a lot of love.