Unforgivable Sin: The Eighth Lock

Not a wish-fulfillment story + no System + two male leads + hard-core detective work and deduction

Pride, envy, wrath, sloth, greed, gluttony, and lust: these are the seven deadly sins. Could there be an eighth?

Someone once said that “indulgence” could be added as the eighth.

So, what is “indulgence”?

This book is entirely fictional. Any resemblance is purely coincidental, and if it happens, what a coincidence.