name of the little red bird in a kids story

In a post-apocalyptic Earth, devastated by an invasion of Elder Gods through Dimensional Rifts seventy years ago, humanity is on the brink of extinction. The invasion caused massive land shifts, destroying continents and contaminating the atmosphere with radiation and pestilence. Survivors now live in domed cities called Fortresses, protected from the horrors outside. To fight back, humans developed the Knight Program, harnessing a mysterious energy source that emerged during the First Invasion. This program produces super-powered soldiers, known as Knights, who are humanity's last hope against the Elder Gods. *** .Enter Huey Blade, the last heir of a ruined sword family and a returnee swordsman in a post-apocalyptic Earth. Insensitive, narcissistic, and possibly sociopathic, Huey was transmigrated to a world of Red and Decay, struggling every second to survive. After decades, Huey finally returns home, only to find Earth devastated and his family long gone. Now, as a not-so-human swordsman, he must navigate this fallen world, as a Swordsman in the apocalypse, and humanity's public enemy number two! ... "What?! No call of duty?!" ... Other name: Returnee Swordsman in the Apocalypse. —Re: STONE GOALS!!!— • Every 20 Golden Tickets — One Extra Chapter. • Every 50 Powerstones — One Extra Chapter ––STONE GOALS–– NOTE, 20 Golden tickets are also equivalent to 50 powerstones. but if there's 20 tickets, and 50 powerstones at the same time, then there'll be two extra chapters regardless to keep up with the goal. So for every 20 tickets or 50 powerstones, there'll be one extra chapter. For now. this may be revised later in the future as things progress.