https://twitter.com/HAG_official/status/1217100153779183617
Official English Title: Without Blinking
Official Japanese Title:「瞬きもせずに」, Mabataki mo Sezu ni
Published as a single, available on iTunes Store, Apple Music, Spotify, LINE Music etc. (Region-locked for now)
UPDATE 0113 GMT+9 Jan 15: it's available worldwide now