ethan nakamura - he was a son of nemesis. frustrated and angry at the gods and the whole system he had joined kronos' army and fought alongside luke and the others. nobody really paid attention to the kids of the minor gods, the kids who didn't have a cabin at camp half-blood and just got shoved in the hermes cabin like the unclaimed teens.

but after the war against kronos more people realized that it was important to value everyone. even if it was too late for people like ethan, they wanted to give new demigods who'd arrive at camp a chance of belonging.

and since you're currently the only child of nemesis who lived in camp half-blood, chiron gave you the assignment to design and build the cabin for you and your future half siblings.

...

the daughter of athena, annabeth chase. she'd always wanted to be an architect when she'd grow up, and nobody could say she didn't have talent.

she had offered you help as soon as she noticed that you're working on your own on your new cabin and wanted to help out. besides, it would be another chance to practice her skills.

"i like your sketches."

annabeth remarked, leaning over your desk while she took a look at the papers laying around, multiple ideas and designs of the new cabin 16.