The transition to the fifteenth floor occurred within a flash of blinding white light. When the sensory distortion faded, the players stood on a narrow stone ledge jutting from a vertical cliff face. The cliff extended downward into a sea of thick, churning fog and upward until it pierced a sky split into two distinct halves. On the left, a harsh, golden sun burned with unnatural intensity. On the right, a pale, freezing moon hung in a dark void.
A massive, weathered vine, as thick as a house, stretched from the ledge and climbed straight toward the sky. Beside the vine stood two children, a boy and a girl, dressed in tattered traditional clothing. They looked at the players with wide, pleading eyes.
Above every player's head, three glowing red hearts manifested. They floated in the air, pulsing in time with each climber's heartbeat.
A large system window materialized in the center of the ledge.
「Floor 15: The Tale of the Sun and Moon」
