Obsessed with Raising Kids, Yet I Became Ruler of the World

[I suddenly want to change the main plot. Let me think about how. The protagonist, his power-ups, and the ending won't change.] Tong You transmigrates and becomes a freshman at a cultivation academy thirty thousand years in the future. In this era where technology and cultivation coexist, the three civilizations of dragons, humans, and machines have merged, and every cultivator can earn the favor of one of them. Tong You saves a little black dragon from an abandoned region of the dragon lands, and unexpectedly forms a contract with it. The little black dragon is weak and helpless but has a huge appetite. Other than being cute, it's useless in every way. Not only does it do nothing to help his cultivation, it also completely cuts off his chances of becoming a great cultivator. Everyone urges him to abandon the little black dragon. Isn't becoming a great cultivator and ascending the civilization ladder better than anything else? * But no one knows that before transmigrating, Tong You raised an identical little black dragon in a game. Bathing it, feeding it, playing with it, and watching the little dragon grow bit by bit into an invincible ruler of the universe was his happiest way to unwind after a busy day at work. Heaven knows how badly he wants to touch the little dragon he raised with his own hands! Now that his dream has come true, what does cultivation matter? And who says their little dragon is just a useless runt? Tong You gazes at the familiar game interface on his communication terminal, at the little black dragon blinking its big eyes at him, and smiles as he reaches out to tap its round little head. [The little dragon received your affection. Mood +1] [When its mood reaches 10, its growth path will unlock! Keep it up!] [The little dragon picked up a little gear!] [Please repair this little gear and help it grow up quickly!] * Later, when the civilization ladder opens once more, countless cultivators struggle to climb it. Legendary dragon powerhouses descend in unison, while the countless machine clans line both sides of the ladder, ready to welcome a human boy as he ascends to the summit. The Dragon Lord bows to greet him. The King of Machines stands respectfully by his side. All things in the universe vie to sing his praises. * This universe once suffered destruction. The curly-haired boy who rebuilt the order of the universe had a black dragon at his side, and created the first machines with his own hands. On the title pages of the creation books of the three civilizations of dragons, humans, and machines, these words are recorded: "He is the origin of everything. He is the world's sovereign." And in the original creation book sealed away at the edge of the world, beneath those words, are several more lines in crooked handwriting. "...He's mine!" "Mine!" "...I! Five 2G#￥EW#!@!" * Powering up means raising a little one, and raising a little one means powering up * A coming-of-age story about a boy, with plenty of non-romantic rivalry Theme: May the world give you the same love and tenderness you give to others.