First image was made using Latent Couple extension:

https://github.com/opparco/stable-diffusion-webui-two-shot

Used 0.7-1 weights.

Tsunomaki Watame

tsunomaki watame, fur-trimmed dress, blonde hair,long hair,purple eyes, white dress, cape

Tokoyami Towa

tokoyami towa, long hair, twintails, purple hair, green eyes, black shorts, white jacket, piercing