The Record of Cause and Effect in the World of Mortals

I have been looking for tenderness in the world for fourteen years, but it turned out to be a dead end of cause and effect that spanned thousands of years. The paranoid bastard who awakened the eye of cause and effect and the teahouse proprietress with a gentle destiny, in the pursuit of the hunter and the gate of nothingness, changed from one-way search to two-way redemption, and finally discovered that all tenderness has a price tag - and what they have to pay is each other's life.