The Sugar Mommy System: The Evil Young Master is Villain!!! - Chapter 137: Gu Changgee — The Tree of Dispear.

I want an S-Rank skill too! I want it so badly, I could die for it![You have awakened an S-Rank skill.] [But it only works when you die.]Eh !? WHAT IS THE POINT OF GETTING ONE IF I DIE !?

A part-time job contract. He became the cold CEO’s imitation boyfriend. He merely wanted to earn a few small bucks and live a comfortable life, but a pity, he was in constant turmoil since then. Well, life had something else for him despite his wishes.“That… beauty, will there be an increase in wages for conversion from ‘boyfriend’ to ‘husband’?”

- Description from Novelupdates

A novel adaptation of K, focused on the history of the blue clan and the events which led to Munakata Reisi’s appointment as the current blue king.