# Nekozuka Hibiki (Blue Archive)
猫塚ヒビキ (ブルーアーカイブ) / 네코즈카 히비키 (블루 아카이브) / 猫塚响 (碧蓝档案)

[**Download here.**](chara-hibiki-v3.safetensors)

## Table of Contents
- [Preview](#preview)
- [Usage](#usage)
- [Training](#training)
- [Revisions](#revisions)

## Preview
![Hibiki portrait](chara-hibiki-v3.png)
![Hibiki 1](example-001-v3.png)
![Hibiki 2](example-002-v3.png)
![Hibiki 3](example-003-v3.png)

## Usage
_※ Hibiki's outfits are rather complicated, so I have documented all of her tags here for your reference.  It may not be necessary to use all of them._

Use any or all of these tags to summon Hibiki: `hibiki, halo, dog ears, bright pupils, goggles on head, black hair, dog tail`

For her normal outfit: `twintails, hair bobbles, engineering goggles, animal collar, purple choker, multicolored jacket, black camisole, grey shirt, black shorts, fishnet pantyhose, dog tags`

For her cheerleader alt: `cheerleader, ponytail, crop top, wing collar, criss-cross halter, pleated miniskirt, pom pom (cheerleading)`
- Use `cheerleader` to strengthen or weaken the effect.
- If the stickers appear on incorrect outfits, add `star sticker, sticker on face, sticker on arm` to the negative prompt.
- If her name tag and collar appear on incorrect outfits, add `wing collar` to the negative prompt.

Calm expression: `light smile, expressionless`

Embarrassed expression: `blush, embarrassed, wavy mouth, open mouth`

Weapon: `mortar (weapon), rocket, mortar shell, suitcase, m logo`

Weight 0.9 - 1.0 should be ideal.  The LoRA is slightly overfit, I'll probably retrain it with slightly fewer steps in the future.  It's still a substantial improvement over the previous version and is reasonably flexible with Hibiki's outfit.

## Training
*Exact parameters are provided in the accompanying JSON files.*
- Trained on a set of 162 images; 82 cheerleader, 80 normal.
  - 8 repeats for normal outfit
  - 7 repeats for cheerleader outfit
  - 3 batch size, 4 epochs
  - `(82*7 + 80*8) / 3 * 4` = 1619 steps
- 0.0905 loss
- 832x832 training resolution
- `constant_with_warmup` scheduler
- Initially tagged with WD1.4 swin-v2 model, then heavily edited
- Used network_dimension 128 (same as usual) / network alpha 128 (default)
  - Resized to 32dim after training
- Trained without VAE.
- [Training dataset available here.](https://mega.nz/folder/2u4HgRoK#1wqHcDAJRi6jrtTAmNjB-Q)

## Revisions
- v3 (2023-02-13)
  - Retrained from scratch since the original LoRA was not very good.
  - Added many new images to the dataset, particularly for Hibiki's regular outfit.
  - Completely re-tagged the dataset. Used WD1.4 swin-v2 as a starting point, then performed extensive editing and cleanup for accuracy and consistency.  Added many new tags to better describe Hibiki's outfits and expressions.
  - Uses improved hyperparamters from my more recent models.
- v1 (2023-01-10)
  - Initial release.