I Ate the Elixir of the Demon Cult Leader and Escaped

'''*This work is simultaneously rated for ages 15 and 19. Please note that some scenes and story developments may differ depending on the age rating. ‘Am I your yin energy power bank? Do you just come find me to suck me dry whenever you need it?’ I transmigrated into the martial arts novel I usually enjoyed. As the minor villain 'Seol A-heon', who dies not long after appearing. But I stole a spiritual medicine? And it belongs to the Demon Cult's Young Master 'Baek Geon-ha'? Why, of all times, did I have to transmigrate at the moment of stealing the medicine and trying to run away! In a desperate, do-or-die situation, I figured if I was going to die either way, I might as well swallow th...