Lakcis:
I'm confident I know the Ruins of Ye Sagira better than any seeker. I've studied really hard, you see.
I want you to speak to Chesha in Ruins of Ye Sagira Exploration Area 1, and tell her that "Lakcis is ready to go to ruins whenever".
Now, to get inside, I believe you can use the Ye Sagira Teleportation Device. Go, and be safe!
"Yes, I will."