knights of the round table's knight of cinder( FGO harem x male reader)

"Embrace the darkness, Embrace your Sins"

Y/n pendragon, adopted son of artoria pendragon and step brother of mordred, a knight who was the most loyal member and supportive family member in secrecy, but a fail knight from that day...what will happen if he was giving a second chance in chaldea when summon? this is the tale...of redemption, from a soul of cinder knight..