Two twins, One demon [KNY Fanfiction]

After the Tokito brothers lost their parent, life has taken a wild turn for them. They have been living for months miserably under the remains of their once happy household... until one particular night. A demon looking creature barges into their home, and attacks the twins mercilessly.
However... the twins aren't as fortunate against this, and both meet a fate worse than death, two different fates for each one of them.

Why does this have to happen to them? What did they do to deserve this...?

Note: Might not finish it, but I will try! Also, this story does NOT contain the Kamaboko squad (maybe Aoi) since all of this happened three years before final selection. (Tanjiro and Nezuko's family is still alive in their own household).

THIS STORY CONTAINS NO SHIPS!!

Without further ado, enjoy the story!