MRS.KIM IS A CRYBABY

Jeon jungkook had already died in his previous life. His life ended on the day of hiss 19th birthday. Cause of death: heart failure.
But now, he was alive again, and the throbbing pain in his temples told him that he wasn't hallucinating.
Not only had he come back to life - he had transmigrated into a silly novel that he once read and he was now in the body of the secondary male character. A pitiful boy with a weak personality and low self-esteem who ends up living a tragic life and dying!
But jungkook was not going to let that happen...

it's not my story, I'm just converting it in taekook AU, all credit goes to the original author.....