(If you're wondering why this sucks so hard it's because I write this a pretty long time ago. When I sucked)
The Butterfly Effect is such a fascinating phenomenon. So, what would've happened...
If Nagisa never crossdressed in the Island arc? Small butterfly effect? Huge consequences?
A little bit of a spoiler, but it needs to be said. Later on into the story, it gets a little serious and the contents
may be triggering for some people. Especially minors. Thank you. :)
(If you have absolutely no idea who Karma×Nagisa, I recommend you watch the series.)