Madotsuki is the main character of the indie game Yume Nikki, created by Kikiyama. She is a young girl who explores her dreams while sleeping in her small, cluttered room. The game is known for its surreal and atmospheric environments, which reflect her subconscious thoughts and feelings. Throughout her dream journeys, Madotsuki encounters various strange characters and surreal landscapes. Players can collect effects, which grant her unique abilities and alter her appearance. The game emphasizes exploration and interpretation, allowing players to piece together the meaning behind Madotsuki's dreams and her emotional state.