This LoRA is based on style of the mangaka Izumi Matsumoto (it's his pen name, real name is Kazuya Terashima, you can find him on MangaUpdates and on MAL). If you don't know, he is the author of "Kimagure Orange Road" manga. Unfortunately, he hasn't drawn much because of his disease.
I trained this LoRA on different black & white panels from high-quality scans of "Kimagure Orange Road". 215 pictures in total. Some panels were cleaned and edited to make training easier for neural network.
You can create characters from manga if you tag them. I added tags for them. Default girl is somewhat resembling Ayukawa Madoka (with non-original hair and eye color) and default boy is Kyousuke Kasuga.
Attention!
Preferable strength is between 0.8 - 1.3 (depends on checkpoint and other LORAs used in generation).
For Pony I recommend using strength of 0.9 - 1.0.
For Illustrious I recommend using strength of 0.8 - 0.9.
I highly recommend you to add tag "retro artstyle". It makes style more like the original one. If it's not enough (for example, for some new characters), then add tag "1980s \(style\) " too.
It displays artist's style even with score and quality tags.
As my testing shows, this LoRA works with every checkpoint.
Yes, you can use it to generate hentai images on Civitai.
Recommended negatives for Pony: "long neck, parted bangs, blank speech bubble, negative space"
Recommended negatives for Illustrious and NoobAI-XL and likes: "jpeg artifacts"
If you do not want Madoka Ayukawa's bangs, then add her tag "ayukawa madoka" in negatives. It'll help.