Red Thread of Fate - Season 1 Episode 4 The Sky in Nagasaki
- Genre: Drama
- Studio: Fuji TV
- Keyword: based on novel or book, depression, friendship, high school, romance, school, abusive boyfriend
- Cast: Nao Minamisawa, Junpei Mizobata, Ryo Tajima, Sayuri Iwata, Ryô Kimura, Rei Okamoto