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Seon Jae-chan, the intelligence service’s ‘snake,’ a human ampler and success-orie...
reincarnation into past body
"Seon Jaechan is a guide & the youngest team leader known as the intelligence services "snake". Due to his unrequited love for Esper Go Woojin he did lots of bad things blinded by love in order to get him but failed. When faced with death, he sincerely regrets the past & wishes for Woojins happiness. However Jaechan wakes up again 6 years in the past. Jaechan made a new plan, this time to become someone who helps Woo-jin and other important people"