Fumetsu no Anata e 2nd Season
To Your Eternity Season 2
Fushi, a seemingly immortal being, has been forced to deal with the death and tragedy of the world. To escape it, he secludes himself in an island, defending himself from the Nokkers, a race of monsters. But instead of attacking Fushi, they instead start targeting the settlements outside of his reach.
The Guardians, a group of warriors first inspired by Fushi's protection of Janada Island, are now regarded worldwide. Joining the Guardians, Fushi goes to the site of the Nokkers' recent attack, where he meets valuable allies. As the conflict with the Nokkers leads to more pain, Fushi must find the strength to carry on.