A growth fantasy where the protagonist, possessed by a 育成 game, raises the weakest Demon Lord into the strongest! ** I lovingly raised a character in the 育成 simulation game , only for the final villain to snatch her up as his bride. When I sent a lengthy protest regarding the ending... I was told, "Then you create a better ending," and ended up possessing the "Demon Lord's Teacher" within the game! To escape this game, I must raise the Demon Lord and see the ending. However, the Demon Lord I must raise, "Seere," is merely 7 years old and the weakest in the world. Caught up in wars and conspiracies, as Seere grows, he begins to worry only about how to gain the attention and affection of his teacher, Nahen— "How do you raise a child?" The protagonist's parenting fantasy to raise Seere into the strongest Demon Lord.