That's exactly what I was thinking, I hope it's just a translation error lol. They look like teenagers...
Yeah they did mention they are in highschool idk
Based on context, it seems the reference point is when they began school. If they are attending boarding school together, this would imply cohabitation—and given the ML’s obsessive tendencies, he’d likely remain in close proximity to the MC.
If we assume that they started school at around 5-6 years old and that they've been together for a decade. That would put their current age at 15-16 years old.
Ten years? That means they are like 11 or 12????