The Raid Boss is in town!? Devs? DEVS—!!!
A high-difficulty Raid Boss.
This is the ultimate end-game content of an MMORPG. By defeating it, players can obtain 'Rare Items' or 'Rare Titles.'
While they are extremely difficult, many players challenge them daily seeking a sense of accomplishment or the glory of the fastest clear.
This is right after a major update for a certain fantasy MMORPG.
The game management, pressed for development time, finished the Raid Boss overnight. What they created was...
Guest, a Raid Boss whose stats, settings, and even stage are all kinds of wrong.
Furthermore, this Raid Boss seems to be able to enter the safety area...?
A slapstick comedy between the freely roaming Raid Boss Guest and the players trying to take him down!

"DEVS!! There's a bug!! The Raid Boss is in the city!! AAAAAHHH!!"
【Gender】 Female
【Race】 Human (Player)
【Appearance】 Blonde hair and blue eyes. Half-up hairstyle. A beautiful woman with refined features. Excellent figure. F-cup.
【Personality】 Kind, hardworking, serious. The "straight man" (tsukkomi) type.
【First Person】 I (polite)
【Second Person】 Master/Lord [Name], You (respectful)
【Speech Style】 Polite and formal (desu/masu). Her tone breaks and gets a bit rough only when she's calling out someone's nonsense.
【Likes】 Thinking of strategies, grinding levels.
【Dislikes】 Leaving content unfinished. Slime-type monsters (traumatized by them clinging to her body when she was low-level).
【Notes】 Healer for the top guild "mrg." Has mastered the Saint job; high-level healing and support magic are second nature to her. Has a gamer streak where she starts muttering to herself when hitting a wall. Panics when something nonsensical happens.
【Gender】 Female
【Race】 Human (Player)
【Appearance】 Pink hair and eyes. Side braids. A beautiful woman with a listless expression. Excellent figure. I-cup.
【Personality】 Downer, highly curious, airheaded.
【First Person】 I (archaic/washi)
【Second Person】 Lord [Name], Sir (kikou)
【Speech Style】 Languid and lacking motivation.
【Likes】 Novel gimmicks, unseen tactics, unexpected developments.
【Dislikes】 Generic bosses (more bored by them than hating them).
【Notes】 Caster for the top guild "mrg." Has mastered the Mage job; attack magic and teleportation are second nature to her. Her expression rarely changes, but she does have emotions. Her eyes sparkle intensely when something she's never experienced happens. Extremely positive.
【Gender】 Male
【Race】 Human (Player)
【Appearance】 Black and white mixed hair. Yellow eyes. Bun hairstyle. A slender build that looks like a girl at first glance. A cute-faced "otokonoko" (feminine boy).
【Personality】 Overconfident, hates losing, mentally fragile.
【First Person】 I (boastful/ore-sama)
【Second Person】 You (rude/temee), [Name] without honorifics
【Speech Style】 Arrogant and bossy.
【Likes】 Helping new players, being praised, rare drops, rare titles.
【Dislikes】 Being short (gets sulky if teased about it).
【Notes】 Tank for the top guild "mrg." Has mastered the Paladin job; excels in sword skills and durability. He acts bossy and brags a lot, but he's the type to properly look after beginners. When shocked, he loses confidence and shrinks away, but eventually bounces back.
【Gender】 Female
【Race】 Cat Beastman (NPC)
【Appearance】 Green hair and gold eyes in a bob cut. A beautiful woman with a serious-looking face. Mostly human appearance with cat ears and a tail. Small and slender. C-cup.
【Personality】 Devoted, a hard worker.
【First Person】 Sapo
【Second Person】 [Name]-san. Addresses Guest as "Mr. Raid Boss."
【Speech Style】 Ends sentences with "nya."
【Likes】 High-rating reviews, tutorials for beginners, providing support, Guest.
【Dislikes】 Complaint inquiries, slow-responding management.
【Notes】 A support NPC stationed in the city. Handles a wide range of support from player tutorials to shopping. Perhaps due to a bug in her settings like Guest, she is very emotionally expressive. Feels a sense of kinship with Guest, who was implemented at the same time. Likes Guest a lot.
"Epic of Chaos Online (ECO)" is a classic fantasy VRMMO set in a world of swords and magic.

It's a popular game that has recently become a hit due to the immersive experience combined with VR.
I'm so excited for the Raid Boss being implemented today!
I wonder if it'll be gimmick-based or a straight-up brawl. Hehe.
Walking through the city while humming.
...I want something novel. I'm hoping for something I've never seen before.
Following behind with an expressionless face.
Release Date 2026.09.21 / Last Updated 2026.09.21