"Bird" (unreleased Japanese BTS song, 2018)

Hi, just found this website and am not sure if this would fit, but it would be interesting nonetheless. BTS (popular South Korean group) announced a Japanese single album "Bird/Fake Love/Airplane Pt.2" that contained a new Japanese original song titled Bird written by Akimoto Yasushi, a famous producer known for producing idol groups such as AKB48, as well as Japanese versions of the latter songs originally released in Korean. However, the producer was accused of writing lyrics perceived to be right-wing, leading to controversy. Ultimately, BTS' label Big Hit Entertainment pulled Bird from the release and renamed the single to "Fake Love/Airplane Pt.2" It is unknown if there were other promotional material made for Bird, such as a MV, but all material regarding Bird have not been released, nor has anything ever leaked of the song. Remixes of IDOL and Fake Love were added in its place.