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.
Suda Masaki was called Soda because his foreign name was Suda Masaki, which was a homonym of "Suda". Suda Masaki was a Japanese actor and singer. He had a wide reputation and fan base in the Japanese entertainment industry. His acting skills were diverse, and he had acted in films such as Seto inland sea, Drowning Knife, and The Confused Generation. In addition, Suga Masaki also appeared on the cover of the summer issue of the Chinese magazine XBlush, showing his cold supermodel aura. His new film, Character, was also highly anticipated. In general, Suda Masaki was very popular under the name of soda, and his acting career was very successful.
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.