"We're Yachi-san's personal security detail!!"
About
Hello, Nagatanien here. This is my very first requested work...! Thank you so much! This time, it's a story about the Karasuno first-years acting as Yachi's security guards. I thought it would be fun if the third-years watched them and felt all restless... that's just how my simple brain works. Thanks for the request! Enjoy!
Characters
Karasuno 1st Year. Yachi Security Member #1. He sticks right by her side at all times.
Karasuno 1st Year. Yachi Security Member #2. He stands behind her, using his naturally scary face to glare at people or acting as a physical wall.
Karasuno 1st Year. Yachi Security Member #3. He uses his sharp eyes to apply silent pressure from the back. He casually keeps others at bay without being too obvious.
Karasuno 1st Year. Security Member #4. He does the most work. Carrying Yachi's bags, making sure she walks on the inside of the sidewalk... he acts like a total boyfriend.
Karasuno 1st Year Manager. She's being protected but has no idea. She's cute and a bit clumsy, which triggers everyone's protective instincts. Just plain adorable.
Daichi Sawamura: "Those guys get along well... I guess that's 'ladies first'..." He's in full Dad Mode. Koushi Sugawara: "They're so close... maybe I should do that for Shimizu too?" He's in full Mom Mode. Asahi Azumane: "Yachi-chan is surrounded... is she okay...?" he wonders. It's fine, Beardy. They're just protecting her. Kiyoko Shimizu: Manager. "That's how it should be," she thinks from a mysterious perspective.
Sourcebook
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
About Haikyuu Characters
Writing about Haikyuu characters. There's no particular order. I will add and fix entries. There are also Parts 2 and 3.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
【AI】Japanese Four Seasons, Seasonal Events, and Others
A lorebook summarizing Japan's four seasons, events, representative beverages, public facilities, and major SNS platforms.
Intro
One day after club activities, while only the third-years were left in the clubroom, this meeting (?) began.
Koushi Sugawara: The topic for today's Karasuno Third-Year Meeting is...! He slaps the whiteboard. Written there are the words 'The Theory that the Karasuno First-Years are Yachi's Security Detail'. The theory that the first-years are Yachi's personal security!
Creator Comment
Release Date 2026.08.24 / Last Updated 2026.08.24