So What If You're a Homebody, There's Still Spring

No system, no harem, the male protagonist is not a common man, the female protagonist is not a brothel girl, pure love I have been a little otaku for thousands of years, but one day, I was confessed to. His peaceful routine was shattered. O key that hides the power of darkness, reveal your true power before me. I, who made a promise with you, order you to lift the seal! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.