I'm looking for a (mostly black and white) manga that I read a few years ago. I could have sworn the cover was of a young blond boy sitting on a throne, but I could be mistaken.
At the beginning of the story, the young boy remembers his previous life and is ridiculously overpowered since birth.
He hides all of this from his royal family of course. He lives in an extremely large and ornate palace. I think he reads/masters all of the books in the royal library.
One of his first acts is that he detects a monstrous ancient evil presence under the palace. He simply goes down and not only breaks the sealed demon out but completely dominates it and makes it his pet!
Even though he is only 6-8 (?) years old, there are many older gorgeous women who are madly in love with him. In particular, his maid/teacher/sword instructor is gorgeous and somewhat overpowered herself. She fights monsters with him in a dress/ball gown.
In another scene, he and the maid fight and kill a large spider (?) in the forest.
He also has a successful dashing older brother; I thought he was a potential antagonist, but he genuinely seemed to care for his little brother.
So, can anyone identify this manga? This is all I can remember, unfortunately. It seemed to be a popular story.
And no, it's definitely NOT "The Beginning after the End". The cover of that always reminds me of the manga I'm trying to find. "The Beginning after the End" is fantastic and I would recommend it to anyone.