(relaxing) Nana 'kuroi Namida" 4th Ending (just The Calm Part) (1 Hour Long). Online

This one-hour edit of the fourth ending theme from NANA, "Kuroi Namida," focuses on the calmer, instrumental sections of the song for a relaxing, melancholic experience. It's designed to bring the atmosphere of the anime's 707 apartment to your study or rest time, stripping away the rock elements for a lofi vibe.