The Retired Killer Wants to Heal summary: Yoo Ji-an, codenamed [Sev], is an S-class agent for LEST, a top-secret government-affiliated killer organization. Having successfully completed 300 assignments at the youngest age, he finally reaches the retirement he has long desired. Ji- an is finally set to execute the modest "healing bucket list" he has been preparing for 20 years. His first post-retirement healing item is [Earning money through legitimate means without killing anyone]. "Boss, I can be deployed to the convenience store right now. I am someone who always completes my assigned missions." However, contrary to his wish to live a quiet life while achieving an extremely ordinary dream, unpredictable incidents and suspicious women keep vying for his attention. The assassin's second life is fraught with hardship and adversity. Will S-class killer Yoo Ji-an be able to achieve ordinary happiness without getting his hands dirty?