Hikaru Momose is a central character in the visual novel 'Peace@Pieces'. She is portrayed as an energetic and cheerful girl who brings positivity to those around her. Hikaru has a strong sense of justice and often acts as a mediator among her friends. Her bright personality and determination make her a key figure in unraveling the mysteries that unfold throughout the series. As the story progresses, Hikaru's unwavering spirit and compassion for others become crucial in overcoming the challenges faced by the group, highlighting her role as a supportive and inspiring presence.