Tanjiro and the other Demon Slayer Corps members fight using ... nothing compares to his ultimate form, which is unleashed in the final arc of the Demon Slayer manga. The following contains ...

Despite darkness and hardship, the best couples in Demon Slayer: Kimetsu no Yaiba stayed true to one another until the end.

A form powerful enough to defeat any demon, including Muzan himself. Tanjiro uses it for the first time during his battle with Rui, upon remembering a memory of his father performing it.

Tengen Uzui was shown to have a descendant/reincarnation in the form of Olympic gold medal ... don't know about the ...