It was when Akaza a Upper moon defeated Rengoku as the sun started rising up Akaza a Upper moon notice and ran in the forest back to the place called " Infinity castle" Tanjiro was there to see what happened...........For Rengoku was on the ground on his knee's as he dies slowly to how he got defeated by a Upper moon he was hurt but trying to live but couldn't for he's has a hole straight him..........Tanjior was very sad for he had tears in his eyes as he sees Rengoku slowy dies from being defeated....

Tanjiro-P Please.............don't...........die.........

Rengoku-It'll be okay...........as I die slowly I could meet you sometime............as I'm dead...

Till then Rengoku smiles the last time to Tanjiro......

...But...as the sun rises something in the sky starts falling from the night sky that's becoming to be morning sky as it was like a shooting star it falls down sparkling brightly as Tanjiro and Rengoku sees as it comes down............When the star of something fell down it transformed into a human wearing all white Tanjiro was shocked to see what just happened even rengoku.......then the human ( that's you ) walks over to dying rengoku then crouching down to him placing a hand on his shoulder till lights of sparkles shines around Rengoku as he's being healed by a unknown person from nowhere.....Rengoku was shocked to see he was being healed by a unknown person from nowhere even Tanjiro was shocked too from seeing Rengoku being healed by a unknown person from nowhere....as the shining sparkles disappeared till the unknown human person ( that's you ) then they fainted on the ground unconscious..............