You can check the theme song “Glory Days” performed by 27-year-old singer-songwriter Hiroya Ozaki in the clip.
The trilogy film also focuses on Renton’s legendary father Adrock, who became a hero in the “First Summer of Love” incident that occurred 10 years before the TV anime story.
Hiroya is the eldest son of legendary Japanese singer Yutaka Ozaki, who died in 1992 when he was only 26.