@DANDAN_THE_DANDAN
as i said, hundreds, possibly thousands exist. Its just a matter that most are very old, so finding scans of them will be hard, but not impossible.
Of the manga I've uploaded here all the gekiga
https://mangadex.org/title/17158/nejishiki
https://mangadex.org/title/42866/red-flowers
https://mangadex.org/title/41757/oba-s-electroplate-factory
https://mangadex.org/title/43798/red-eyes
https://mangadex.org/title/43800/sakura-illustrated
and I plan to upload more. There are others on the site scattered around.
https://mangadex.org/title/5769/secret-comics-japan
https://mangadex.org/title/24586/comics-underground-japan
https://mangadex.org/title/24071/toukyou-ubasuteyama
https://mangadex.org/title/41823/yoshibo-s-crime
https://mangadex.org/title/16705/tonari-no-onna
https://mangadex.org/title/4160/munou-no-hito
https://mangadex.org/title/8362/hissatsu-surume-katame
https://mangadex.org/title/13748/sekishoku-elegy
https://mangadex.org/title/31028/gold-pollen
And this https://mangadex.org/title/27634/mw this is the gekiga manga Tezuka created for his failed gekiga magazine after he realized it was profitable and damned his own argument that manga should be for kids.
https://mangadex.org/title/15933/kamui-den this one of the most well known gekiga manga that most people didn't realize was gekiga.
Like we have dozens of titles already published in English and French, and hundreds more left unscanlated or unpublished in Japanese.