The Judgment of Original Sin

As the current deputy ruler of Heaven and archangel, Michael, known as the Prince of God, is summoned to the temple on a sunny day. The reason: his great Father God has created another problem. The problem's name is Lucifer, and Michael is forced to take on the task of raising him. Four months later, when he is summoned to the temple once again for the same reason, the smiling deputy ruler says he needs to personally teach his dear Father God a thing or two about Heaven's population. Our great God makes a fatal mistake. He hands the little angel named Lucifer over to Michael, and gets his own archangel's wrath in return. What our great God never expected was that many, many years later, Michael would suddenly appear before him with a little angel who looks about seventy percent like Lucifer. God is horrified: Why has Lucifer turned into a child again?! Or do you have a thing for children? Michael restrains the urge to draw his holy sword and smiles sweetly. "Dear Father God, this is our son." God: "...Wait, what did you say?! Your son?!" Michael smiles even more brightly. "Mm-hmm? Do you have a problem with that?" God: "...No, just don't draw your sword!" -- I originally wanted to call this something like "Trouble Really Is Trouble," but I couldn't resist my chuunibyou tendencies (x This is actually a silly story (x The series where you raise the man who becomes your partner (x Chuunibyou and madness in equal measure. Probably not much angst (x Main pairing: Lucifer/Michael √