I'm pretty sure I spotted a "lady" in the commentary, but I'll await commentary translation before tagging it.
Can't translate the whole thing, but artists mentions something about originally intending to draw just Jun'You alone, but "because it felt lonely" or something like that, he added in the two from SixthDesDiv as well.
Bonus fun fact: There are two mentions of "ladies" (れでぃ & レディ) in that final paragraph. One is in hiragana (slightly less childish) and one is in katakana (... pretty childish). I'll leave you to figure out which one refers to which child.