Imprinting (Yandere!Fukase x Reader)

His purpose was to be yours and yours alone. To remain at your side and make you happy. You were his reason to exist. You were what gave him a need to be. There were only two problems.

1. His devotion was the result of an accident.
2. Everyone keeps trying to keep the two of you apart.

Well... at least one of those can be fixed, right?