2girls :d arm_up armpits blue_eyes blue_hair blue_nails frills green_hair hair_bun hair_ornament highres holding holding_microphone honkai_(series) honkai_impact_3rd idol liliya_olenyeva long_hair microphone multiple_girls music nail_polish open_mouth pink_hair pink_nails purple_background purple_eyes rozaliya_olenyeva shorts siblings singing single_hair_bun smile stomach summer_uniform tail thigh_strap thighs twins