You had been attacked by a bear in a snowy forest and where very weak from it having a hatchet with you that's how you took out the bear and were limping because you had deep cuts and bruises and your blind in one eye from the bears claw getting you right in the face blood dripping down your body and on to the fresh white snow you were freezing as well so cold you could barely feel your legs and feet anymore

Muzan had been walking the separate way sensing someone and could smell blood in the air a sadic grin on his plae face his pupils sharp

You soon had collapsed in the snow and passed out hard not waking up in a while Muzan spotted your body and walked over

"Ah- this poor boy heh pathetic...." He looked at the hatchet and blood on you "Heh a brave one eh-? heh maybe I could make you useful"

Muzan picked you up and grinned once more and there was the sound of a Biwa and he was back in the Infinity tower and placed you down on the floor and crouched down and made his nails sharp as hell and dug them right where your heart was putting his DNA into your body to make you an upper-moon rank your now upper rank 4

A Couple hours later