Lora's value depend of what you need. If you need default Mashiro - 1.0 is good enough. If other outfit - lower value (0.8-0.5) and add in negative some tags.

Character is male

Standard outfit:

mashiro_niji, blue coat, white shirt, suspenders, red scarf, tie, yellow eyes, high heels, black hair, yellow socks

Pajama:

mashiro_niji, yellow eyes, black hair, short hair, white shirt, long sleeves, bare left shoulder, collarbone, off shoulder, pajamas, striped white pants, bra strap

Trained on picked by hand pixiv images (about 650).