Hoshira

Second season of Tensei shitara Ken deshita.

The Sage of Wind, Ephtal is a reincarnated human, coming from modern Earth. Reincarnated in a new world where magic is real, he decides to devote the entirety of his life in the pursuit of magic. Despite his efforts, though, he discovers that he is absolutely talentless in magic, and breathed his last in anguish. But it isn't the end for him just yet! He reincarnates once again bearing the same name, Ephtal, 400 years later. Having retained his knowledge and power, he steels his resolve and once again sets his sights for the peak of magic! However, in a surprising turn of events, he discovers that magic has terribly declined. In this era where powerful spells are a rarity, his talentless self is now completely unmatched! From the depths of powerlessness to the peak of power, the talentless but peerless mage's journey to the top starts now! (Source: Manga UP!, edited)

Sentenced to death, ninja Gabimaru the Hollow finds himself apathetic. After leading a blood-soaked life, Gabimaru believes he deserves to die. However, every attempt to execute him inexplicably fails. Finally, Sagiri Yamada Asaemon, a fledgling member of a famed executioner clan, is asked to take Gabimaru's life; yet Sagiri makes no move to kill him as requested. Insisting that Gabimaru will not die because of his love for his wife, Sagiri instead offers him the chance to obtain a full pardon for his crimes. If he can travel to the island of Shinsekyo and obtain the Elixir of Life—which supposedly grants immortality—and bring it back for the shogun, then his freedom will be assured. But of the many who have traveled to Shinsekyo in search of the mythical Elixir, not a single person has returned sound of mind, if at all. Though unaware of the numerous dangers ahead, Gabimaru decides to accept the offer—alongside ten other death row convicts—in hope that he and his wife may finally live in peace. [Written by MAL Rewrite]

Seeking the key to the elixir of immortality, the group arrives at the fortress of the island's monstrous ruler, the "Tensen." To survive and escape the island, cooperation becomes essential—regardless of whether one is a condemned criminal or an executioner. Meanwhile, the shogunate orders additional landings on the island of the Immortal Realm, led by Shugen Yamada Asayemon. Among them are the Ishigakure clan, who share a past with Gabimaru. Desperate to find the elixir and escape the island, Gabimaru and his companions face the Tensen in a battle that escalates into an all-out confrontation between humans and immortals! (Source: Twin Engine, edited)

In an isolated village, two twins were born, separated by day and night. It is years later, and while the older brother Yuru has become a hunter of animals, his sister Asa has been locked away in a cage, ordered to perform a special duty that prohibits her from meeting more than a few select individuals. On an otherwise inconspicuous day, a group of armed men riding in helicopters, referred to as "dragons" by the citizens, assaults the village in search of Yuru, killing every adult on sight. When Yuru attempts to meet up with Asa and flee, he finds a dead body instead—on top of that, the person who killed her claims to be Yuru's true twin sister. Before the woman can capture him, Yuru is rescued by a man named Ryuu "Dera" Tadera, an outsider who frequently visits the village. However, it is not long before the two are cornered. In a last-ditch effort, Dera makes Yuru give a gift to the deity of the village, summoning a pair of daemons whose existence is bound to reveal the truth behind these chaotic events. [Written by MAL Rewrite]

Second season of Gaikotsu Kishi-sama, Tadaima Isekai e Odekakechuu.

Final part of Bleach: Sennen Kessen-hen.

Third season of Mushoku Tensei: Isekai Ittara Honki Dasu.