So if you read the story description you already know that Tanjiro becomes a demon along with his sister. Not only is he a demon but he is al the level of demon king Tanjiro from the manga. Now the reason I did this is because that's how I wanted the story to go.
A couple more things he has a sort of descize that makes him look like how he does in both the anime and manga. But when he gets emotional like anger, sadness, fear, and other more negative emotions he can turn into his demon for without realizing.
The reason that it isn't really know by everyone is because his human form has a sort of ability that hides his demonic aura? Not really sure what to call it.
This is what he looks like as a demon.(art is not mine)
This is him as a human(also not mine)
Really do home you enjoy tbis I have planned this for a while I just have not got around to actually posting it.
YOU ARE READING
The Secret I Must Keep (Demon Tanjiro)
FanfictionTanjiro became a demon as well, not only that but he is more powerful that the demon king himself. Would this affect the story when not only Tanjiro is fighting demons but he has to choke back the craving that he has for human flesh.