I read this one a long time ago. Their life trajectory really took a turn just because the blondie trashed the black hair's favorite show. The gyaru became an otaku and doujin artist who burns her wageslaving money on gacha, while the nerd became a cool and popular streamer who does modelling on the side.
This reminds me of another oneshot called The Gyaru is Curious About the Otaku by Enma Akiyama, though that one goes for a different direction.