Both are phenomenal. The manga panels offer museum-quality historical detail, while the anime provides incredible voice acting and pacing.
Seinen refers to anime and manga targeted towards an older male audience, often featuring more mature themes, complex storylines, and graphic content. Here are some popular seinen recommendations: most famous hentai
Tanjiro Kamado joins the Demon Slayer Corps to find a cure for his sister, Nezuko, who was turned into a demon. Both are phenomenal
Tanjiro Kamado joins the Demon Slayer Corps to find a cure for his sister, Nezuko, who was turned into a demon. often featuring more mature themes