Responses
My theory might either be that
1. Ichi might be intersex, technically he has a 'female' part
2. He's not exactly a natural human since we have never actually know anything about his parent our how he ended up in that forest too 'cause I felt like it was implied that he was abandoned but we actually really don't know if the fact is 100% true or not

What is that trying to foreshadow :000000? Ichi not being human would be a twist but it would also take away from him being a male witch.