Tanjiro Rengoku is the younger sibling of Kyojuro rengoku and the older brother of Senjuro rengoku. he was adopted by shinjuro rengoku (the dad) after tanjiro's family was murdered by Kibutsuju Muzan. He was adopted because of his similarity with Shinjuro's deceased wife. Ruka Rengoku. How does his life change if he is a rengoku? read to find out!! (this idea just came from thinking about random stuff and then I remember seeing this one thing where rengoku and tanjiro pretended to be brothers-)
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