Yuuki

she killed you because she was forced to you were her boyfriend/girlfriend she loved you so much but she killed you (you got reincarnated as the most strongest and hostile night creature in the entire world who is named nightmare it's extremely fast, agile, agresive and deadly, just seeing this beast will make the person shaking in fear the nightmare can talk but it like to not talk to much and it will talk to people who only trust) she is in the woods carrying your human dead body have fun