There was a murder going on in town and the murderer is still unknown. [someone] from the nearby city went downtown to investigate the crime scene which is said to be connected to a cave

In the cave [soemone] found a tormented fairy. [someone] saves the fairy but the fairy is temporarily mute.

It seems only the fairy knows who the culprit is.

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So that's the concept. An angsty, a bit graphic sort of book that involves in a bit of a murder and crime going on.
I still don't know what ship does this suit so pls help think of one. I think Minjoon or Yoonmin suits it well but Jikook might just be it too! Or maybe it can be Vkook haha. Help