Tanjiro might use his sense of smell to detect hidden threats. Since his sense of smell is super - enhanced, he could sniff out any demons or traps in the way of saving Rengoku. For example, if there are demons disguised as allies, Tanjiro would be able to tell by their scent.
Well, in my opinion, Star Wars has the edge in fanfiction for this 'Warhammer 40k vs Star Wars' comparison. The concept of the Force is just so fascinating and offers a lot of room for creative exploration in fan stories. Also, the iconic characters like Luke Skywalker and Darth Vader are well - known and loved, which makes it easier for fans to write engaging stories. Whereas Warhammer 40k can be a bit more complex and intimidating for new writers in the fanfiction world.
Yes, in some fanfictions, Tanjiro is depicted as the reincarnation of Yoriichi. This concept adds an interesting layer to the story as Yoriichi was an extremely powerful and legendary figure in the original lore. The idea allows for new storylines where Tanjiro might inherit some of Yoriichi's skills or have a deeper connection to the past events related to Yoriichi.
Tanjiro's fate in the manga is that he ultimately passed away. This event was a significant part of the story's development and had a profound impact on the other characters and the overall plot.
Tanjiro's strength in the manga is significant. He acquires new powers and techniques, and overcomes numerous powerful foes with determination and strategy.