strike witches, strike witches: suomus misfits squadron, world witches series
erica hartmann, ursula hartmann
nuko (buffalo)
2girls, blonde hair, blue eyes, breasts, glasses, holding, holding removed eyewear, incest, multiple girls, navel, panties, saliva, saliva trail, short hair, siblings, sisters, small breasts, tank top, tongue, tongue out, twincest, twins, underwear, unworn eyewear, yuri
bad id, bad pixiv id, variant set