30 Anime for Your Next Marathon

Saitama trained until he became strong enough to defeat any enemy with one punch, but the lack of challenge has left him bored and unrecognized. After accepting the cyborg Genos as his disciple, he registers with the Hero Association, where his low ranking contrasts with his true power; as monsters and aliens threaten the cities, he searches for a battle that can make fighting exciting again.

Crunchyroll

Yuji Itadori swallows one of Ryomen Sukuna's cursed fingers to save his friends and ends up sharing a body with the most feared demon in history. The sorcerers postpone his execution until he can gather and consume every finger, so Yuji joins the Tokyo school with Megumi and Nobara to exorcise curses while struggling to keep Sukuna under control.

Crunchyroll

An attack threatens the peace between humans and spirits, separating Xiaohei from his master Wuxian while those responsible try to provoke a war between both peoples. Hei must cooperate with Luye, another of Wuxian's disciples with whom he constantly clashes, to trace the conspiracy; the investigation forces them to decide whom to trust as authorities on both sides pursue incompatible goals.

BilibiliPrime Video

Tanjiro Kamado returns home to find his family slaughtered by a demon, with his sister Nezuko the only survivor and transformed into one herself. When she shows that some humanity remains, Tanjiro joins the Demon Slayer Corps to seek a cure and pursue Muzan Kibutsuji, the killer responsible, while learning breathing techniques to fight increasingly powerful demons.

Crunchyroll