@Bighomer Where I live an high schooler would be 15 at 10th grade, 16th at 11th grade and 17 at 12th grade.
And there's always that kid that has a growth spurt too early. (it's becoming quite more common imo, I see middle schoolers that look older than me and I'm 23.)
So I can actually imagine this scenario happening when they're both cosplaying as HSers.
Anime/Manga has f-ed me up since I'm enjoying this. 🙃