Once you leave the beach, the environment becomes significantly more dangerous.

: Never choose "red" dialogue options; eventually, black bubbles will appear, and she will leave. Standard Route : Choose "red" options to progress her specific scenes. Ara (Beach/Lake)

I can then give you or confirm if the text was a corrupted copy-paste error.

Decoding the appended string ("walkthrough d pg rzt j67h new")

: Head east from the partially collapsed submerged dock to find the entrance leading to the ruins.