Datasetpublic

1anon8anon1/yaruo-mlt-aa

Japanese AA (Shift_JIS art) — MLT収集所 collection v32.0 1,381,069 individual AA pieces parsed from the 15,002 MLT compilation files of the やる夫スレ用MLT収集所 (Yaruo-thread MLT Collection), the community-maintained archive of 2channel/5channel ASCII art. Obtained from the collection's official まとめzip (mlt_v32_0.zip, 2026-06-27, distributed via AAHub / AAMZ Viewer). This is, to our knowledge, the largest machine-readable corpus of human-made text art ever assembled: ~25 years of Japanese… See the full description on the dataset page: https://huggingface.co/datasets/1anon8anon1/yaruo-mlt-aa.

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Dataset Card

Japanese AA (Shift_JIS art) — MLT収集所 collection v32.0

1,381,069 individual AA pieces parsed from the 15,002 MLT compilation files of the やる夫スレ用MLT収集所 (Yaruo-thread MLT Collection), the community-maintained archive of 2channel/5channel ASCII art. Obtained from the collection's official まとめzip (mlt_v32_0.zip, 2026-06-27, distributed via AAHub / AAMZ Viewer).

This is, to our knowledge, the largest machine-readable corpus of human-made text art ever assembled: ~25 years of Japanese AA culture, organized by character/franchise/topic by community volunteers.

Format

One row per AA piece (MLT files are split on [SPLIT] separators):

column	description
`source_file`	path of the MLT file inside the archive
`category`	directory path = community categorization (franchise/character/topic)
`mlt_name`	MLT filename stem, usually the character or subject name
`piece_index`	position of the piece within its MLT file
`text`	the AA itself, Unicode, `\n` line endings
`encoding`	source decoding used (`cp932` for 99.97%)
`n_lines`, `max_line_chars`, `n_chars`	size statistics

Median piece: 21 lines × 66 chars.

Rendering — important

This is Shift_JIS art, not monospace ASCII art. It is drawn for a proportional font: 16px MS PGothic (canonical) or the free Saitamaar/Mona fonts. It will look misaligned in any monospace font. To render to images, lay out text with one of those fonts at 16px line height (e.g. via Pillow with the TTF, or a browser).

Caveats

—Authorship is anonymous and communal (2ch/5ch board culture); there is no explicit license. Many pieces depict characters from copyrighted anime, manga, and games. Treat as research/training material; redistribution of individual pieces follows AA community norms (free reuse in AA culture).
—The collection includes an エロ描写用 (adult content) category branch, identifiable and filterable via the category column.
—Piece splitting is on [SPLIT] lines as used by (´д｀)Edit / OrinrinEditor; a small number of "pieces" are usage notes or headers rather than art.

Provenance chain

2ch/5ch AA boards → volunteer collection & categorization by MLT収集所 (continuously since ~2008, current version 32.0, 2026-06-27) → official まとめzip download → parsed to parquet (cp932 → UTF-8, CRLF → LF, split on [SPLIT]).