Life Hacks/Young/Settle things down and console Billy
"Hey, hey! Alright. Everyone calm down. You Ok Billy?" You ask, offering him a hand up.
A flash of inspiration strikes you as you take into account the misogynistic attitude he's been taking and you have a pretty good guess as to something that might just work here.
"So, it looks like you lost there. A real man should accept defeat gracefully, right?"
"But... no! I can't loose to a girl! She must have cheated!" Billy protests.
"Mercy is a simple contest of strength. There is no way to cheat." You tell him... or rather, now that you're this close, is it a him? You can smell something from Billy that seems a little like estrogen, and his pants smell mildly of child vaginal musk. Is it possible that "he" could be...
Well, you could probably just file that information away for the future. Or, maybe you can privately exploit it now? It could be interesting to figure out why a cross-dressing girl is so against a tomboy like your sister joining in a game.
Decisions, decisions. Well, one way or the other, it would probably be a bad thing to just bring it up publicly.
- Try to persuade Billy to play baseball with Roni and everyone (Ignore gender issues route)
- Excuse yourself and Billy from this game and have a talk with him somewhere else in the park (neutral route)