The instrumentation can also contribute to making an OST suitable for a sad love story. Soft instruments like the piano or the violin are often used. The piano can create a very intimate and sad atmosphere with its solo notes. The violin, with its ability to produce long, drawn - out, and sometimes screechy notes, can add to the sense of drama and sadness. Also, the use of ambient sounds or a minimalistic approach in the music can enhance the feeling of emptiness or loss that is common in sad love stories.
Perhaps the dog represents loyalty in the 'gintama sad radio story'. In Gintama, loyalty is a big theme among the characters. If the dog is loyal but is let down or something bad happens to it, it could be used to highlight the idea that even the most loyal beings can face disappointment and sadness. It could also be a way to tug at the heartstrings of the audience, as most people feel sympathetic towards dogs.
I'm not entirely sure specifically about a 'dog in Gintama sad radio story'. Gintama is known for its wacky and often emotional storylines. It could be that there's a story within the Gintama universe where a dog is involved in a sad event that was perhaps told on a radio - like a character reminiscing about a dog they lost or something similar.
The overall mood and the way the instruments are played. Maybe the story it conveys through the music is one of separation and longing, which gives it that sad love story feel.
The answer is: "OST song" refers to the song in the OST. OST referred to the original music in movies, TV series, and other film and television works, and the song part was the OST song. According to the search results, some OSTs of movies and television works included some songs, such as the theme song of the TV series OST of " A Thought of Passing Mountains," many of Zhou Shen's OST songs, and Yu Kewei's Top Ten Classic OSTs. Therefore, an OST song referred to the song part of the original music in a film or television work.
I recommend the book "Possibly a Fake Silver Soul". It tells the story of Jiang Cheng, a transmigrator, who met the owner of Xinghai District and his girlfriend, Jiang Hua, who were traveling in the universe in the dragon vein of a certain planet. Later, he came to Earth and met his teacher, Yoshida Shoyo, who had influenced his life. He also met a group of friends. This included the transmigrator Okita Soki. This is a Silver Soul Doujinshi novel, don't miss it. I hope you like this fairy's recommendation. Muah ~😗