Ixiu's original name is unknown. He was an undead monarch in a different space, an unspeakable person. Just before he was about to completely dominate the world, he blew himself up and died due to a conspiracy. When he woke up, he became Isu Potter. He had a poor twin brother who was the savior - Harry Potter.
Yi Xiu: I heard that the person who killed my parents in this life was "you know who". What a coincidence, it's me too!
Harry: ...(Helpless)
ps: Updated as the occasion arises, time may vary
Purpose: To pursue the lost warmth