I wonder if they will feature Minamoto no Yorimitsu and the Shitenno, since they are technically the killers of Shuten Douji, which the author said he wanted to get to later, and their deed is literally a story of legend?
The author would have also obviously made the child have much shorter hair if it was a boy. You can’t apply western standards to Asian cultures. Very different mindset.
The most sus is that she forbad him from talking to her friends and family. Likely she’s lying to her family and friends, or her family and friends might be in on it and afraid of them for burping out the truth.