Erin: the rip_indra vs mygame43 cutscene

Erin is an NPC in the Third Sea whose unique role is to replay for you the cutscene of the duel between rip_indra and mygame43, the two game owners. She doesn't sell anything, doesn't give any quests, and has no rewards attached: it's a piece of lore to see once. She greets you with a "NOOOOO I'M GETTING A FLASHBACK AGAIN!" before launching the scene.

How to get it

Erin cannot be obtained; she is a purely decorative NPC. You can find her at Castle on the Sea in the Third Sea, on the right side of the castle, just next to the ramp. Talking to her is free and requires no prerequisites.

Her dialogues

Line	When it appears
NOOOOO I'M GETTING A FLASHBACK AGAIN!	As soon as you interact with her
Ok... wait a bit.	When you choose "Let me see". The cutscene loads a few seconds later
Scene is already loading...	When you choose "Let me see" while the scene still hasn't launched after your first choice

The cutscene

Once launched, impossible to skip: you must watch it to the end.

The scene differs slightly from the trailer: in-game, mygame43 wields the standard Dark Blade while rip_indra carries the Slayer Skin of the Dark Blade. The Fandom also notes an additional inconsistency in the in-game version, with Indra's attacks being green instead of white even though he's using precisely the white (Slayer) version of the weapon. During the fight, both owners actually use the old Dark Blade model.

Last useful detail: resetting your character during the cutscene triggers a camera bug that the Fandom describes as literally a "second-person view".

Trivia

Erin is inspired by erin, a game administrator. She also appears as a secondary character in the Blox Fruits manga.
She wears the Valkyrie Helmet, the accessory you get 100% from defeating the Raid Boss rip_indra.
She reappears during the Valentines Delivery, where the Aura Editor delivers her a letter.
The NPC was added with Update 15.