Zonbicchi wa Bicchi ni Fukumaremasu ka?

A girl who has lived a sheltered life begins to feel pressure from a friend about her lack of life experiences. She starts developing unusual thoughts about her childhood friend, who is now her boyfriend. During one such moment of daydreaming, she meets the gaze of an older man, feels embarrassed, and flees the scene. She is then struck by a truck. From that point on, she must maintain emotional excitement through personal experiences, or risk her heart stopping.