Percy Jackson was your older brother by 3 years full blood same mom same dad. Ever since Percy turned 16. He had become very overprotective.

So when you two were at the poseidon table. Percy noticed you and a random apollo kid eye flirting

He scoffed a glare on his face as he put his hands over your eyes causing you to groan in annoyance.

"Don't think you can slide past me" he whispered his hands over your eyes. Glaring at the stupid son of Apollo