The rock song titled "Sayonara Elegy" was written by singer Ishizaki Huwie and describes the sadness and solitude felt by a man. Suda commented after the recording of the song that he feels strongly for this especially since he had consulted Ishizaki during the process. Although he felt humbled by the offer to sing the theme song, he was happy about this rare opportunity and confident that the final result would be a song which would make people want to fall in love. In addition, as the cast is largely made up of people about the same age as him, Suda said that this is a drama which he himself would be very interested to watch and hoped that the song would be a source of support to everyone working on this drama.
Sources: Sanspo / Nikkansports / Sponichi