In 'Moonlight', the story revolves around the intriguing connection between Nonomiya, a pessimistic boy, and Youko Tsukimori, a seemingly flawless girl. Nonomiya, disillusioned with his monotonous existence, finds solace in his daydreams until he stumbles upon Youko's notebook one day. Inside, he discovers a peculiar entry titled 'Murder Recipe', filled with potentially fatal scenarios rather than actual plans. As Nonomiya pursues this mystery, he confronts Youko about the ominous contents, only for tragedy to strike with the sudden death of her father, leaving questions of coincidence or something more sinister lingering in the air.