This lora should provide Ryoko Otonashi, Yasuke Matsuda, and Junko Enoshima. Likewise, it should be able to mix and match them in the same image. In theory it should do OK with both tags and narrative descriptions, but tags will probably work better. They are as follows:

Ryoko Otonashi: ryoko otonashi, danganronpa/zero, danganronpa_(series), otonashi_ryouko, 1girl, gray jacket, neckbow, white shirt, gray skirt, white socks, brown shoes, otonashi_ryouko, breasts, collared_shirt, dress_shirt, grey_shirt, hope's_peak_academy_school_uniform, jacket, large_breasts, long_hair, neck_ribbon, open_clothes, open_jacket, red_eyes, red_hair, ribbon, school_uniform, shirt

Complementary tags for Ryoko to try:

Standard uniform: hope's_peak_academy_school_uniform

Holding her notebook: book, holding_book

Hugging her book: book, hugging_book

Yasuke Matsuda (add his jacket with black_jacket): danganronpa/zero, danganronpa_(series), matsuda_yasuke, 1boy, ahoge, black_hair, grey_eyes, necktie, formal_clothes, shoes, pants

Both together: danganronpa/zero, danganronpa_(series), matsuda_yasuke, otonashi_ryouko, 1boy, 1girl, ahoge, black_hair, grey_eyes, long_hair, necktie, red_hair, school_uniform, very_long_hair, skirt, gray skirt

Coloring for Ryoko's clothing tends to vary a lot in the official art so I'd advise just playing around with tags to tweak it to what you'd like. You 'might' be able to push it into anime styles by adding either of these to the prompt:

This is an anime screencap from Danganronpa 3.

This anime screencap is from Danganronpa the Animation.

I think the lora came out OK in the end, but the process was hampered by lack of training data. There's really not a huge amount out there, offiical or fan made, of these two. I mean Aiko Umesawa had more screen time in the Danganronpa 3 anime than they did. I wound up mixing a combination of the highest quality unofficial art and all of the official art along with selections from my other Danganronpa loras for both characters and the anime styles. The hope is that by going that route I'd get just enough bleed-in from the other Danganronpa stuff to balance out the distinct look of the Danganronpa Zero art style to get it pushed closer to the normal Danganronpa style. Which is also why Junko features heavily in this lora's dataset. I figured that was a solid choice for a base in the anime and sprite styles to push closer to.