neonpoop's manga / #interesting(39)

So my guess is that red hair is the heavenly prince who was banished by the Heavenly Father (probably due to the scheming of lucifer and the dark hair guy). MC gave him protection and has since had his memories wiped. Lucifer or the Heavenly Father have then sent angels to kill the red hair but the angels have been killed (from mc’s spirit protecting the baby) and dark hair guy cooked up the scheme to send MC down there as MC was second in command, now with MC “dead” lucifer can become 2IC. My question is how MC knew red hair before his memories were erased. Were they lovers and red hair was converted to a child like form when he was cured into hell, or did MC protect and “raise” the baby prince?