After experiencing a painful event, Mashiro finds herself stranded in an unfamiliar land. There, she encounters four alluring beings known as "celestials". However, there's a catch: Mashiro is the only human female present, and the celestials request that she mates with them and bears their children. Mashiro, who is shy and frightened of males, faces a dilemma - how can she help repopulate their world when her primary aim is to overcome her fears and experience genuine love?