Honest to god what is going on here.
They’re just so unlikeable, I feel like the author is playing it off as “oh the situations we get ourselves in” but;
1. The girl swore not to mention it and did do immediately (the dungeon)
2. The boy arrogantly thought he was on par with seasoned adults.
3. His sister wandered into a dungeon alone!
Why is he giving her grief for following? She should be giving him an earful especially as she knows what fate awaits the sister and now she’s gotten herself cursed.
If this wasn’t an isekai I’d put it down to them just being terrible kids but she’s mentally old enough to take some kind of charge. Doesnt come across as charming at all.
It’s hard to read is what I’m saying haha, thanks for the work tho