(All images were generated in Tensor.Art in the model: "Nya-Iris")

Illustrious is a very interesting model, so I recommend a fairly complete prompt to be able to get the most out of it, you can also add some loras to improve its quality

Base: dxd-xenovia, 1girl, yellow eyes, large eyes, short hair, blue hair, green streak, multicolor hair

Battle Suit: dxd-xenovia, 1girl, yellow eyes, large eyes, short hair, blue hair, green streak, multicolor hair, gloves, breasts, leotard, thighhighs, black leotard, fingerless gloves, hair, elbow gloves, black gloves, black thighhighs, cross necklace, battle-xenovia, anime_style

School uniform: 1girl, yellow eyes, large eyes, short hair, blue hair, multicolor hair, thighhighs, breasts, school uniform, large breasts, skirt, dxd-uniform, anime_style,