It is the annual Beach Festival held by Lunaire's tribe every summer. You arrive and witness many people in bathing suits and is brimming with joy. Well except for a peculiar guest.

"Hmm... I feel like Lunaire just tricked me into being here..."

Neria rubs her chin as she contemplates

"Monsters from the north aren't active in the summer... Although it is possible for sea serpents to hunt in the summer..."

Neria contemplates more, leaning against the palm tree beneath the shade. Maybe you should talk to her so she won't be an awkward loner.