Most popular anime to watch online

Despite its long run, One Piece remains incredibly popular and is approaching its grand finale, making now a great time to start watching. It's known for its colorful world, imaginative characters, and Devil Fruit powers.

This highly anticipated season continues the acclaimed dark fantasy action, adapting the intense Culling Game arc with high-stakes battles. It topped ABEMA's streaming view count rankings for Winter 2026, solidifying its place as a front-runner for Anime of the Year.

Demon Slayer continues to be one of the most popular anime globally, with animation studio Ufotable consistently delivering high-quality action. It's renowned for its exciting fight scenes and gorgeous visuals.

This thoughtful high fantasy adventure continues to captivate audiences with its balance of slice-of-life moments and impressive action. Its second season is highly rated and secured the #1 spot in ABEMA's comment count ranking for Winter 2026.

The long-awaited second season of Hell's Paradise continues its gruesome and action-packed narrative, adapting the intense Hōrai arc. It's praised for its body horror, strategic fight puzzles, and further character development.

This surprise isekai hit gained significant attention for its spectacular animation and unique premise about a former head of the Holy Knight Order convicted of killing a goddess. It offers promising action-fantasy elements and a compelling plot.

This romance-comedy is praised for blending innocent romance with masterful comic relief, offering a refreshing change of pace in an action-heavy season. It follows a shy high school girl attempting to get closer to a cheerful classmate.

Oshi no Ko Season 3 continues its dramatic story within the entertainment industry, delving deeper into revenge and mystery. It ranked among the top popular anime in Japan for Winter 2026, with fans praising its compelling narrative and 'god-tier' music.

This visually stunning fantasy series is highly anticipated for its unique magic system where spells are literally drawn with ink and brush. It has the potential to be one of the most visually stunning series of the decade.

This new series marks Hiromu Arakawa's return to weekly anime, featuring twin siblings in a world where humans contract with powerful daemons. It's highly anticipated for its premise exploring revenge, identity, and the line between human and monster.

This popular isekai series continues after a major cliffhanger where everyone forgets about Subaru, promising intriguing power systems and complex characters. It was declared the most anticipated Spring 2026 anime in Japan.

Based on a Manga Taisho award-winning manga, this series created buzz for its unique premise following Charlie, a 'humanzee' navigating human high school. It explores what it means to be human through a compelling narrative.

Solo Leveling gained significant popularity for its engaging power fantasy and action sequences, based on a highly popular web novel. It follows a weak hunter who gains the ability to 'level up' and become incredibly powerful.

This supernatural action-comedy topped Netflix's official anime chart in the second half of 2025 for view count. It features two high school students involved with aliens and spirits, offering a unique blend of genres.