safebooruhttps://safebooru.org/index.php?page=atom&tags=2girls arknights book coat cup glasses grey background greyscale highres instrument medium hair monochrome mug multiple girls multiple views music open clothes open coat owl ears piano playing instrument playing piano profile ptilopsis (arknights) ribbed sweater semi-rimless eyewear silence (arknights) simple background spill sweater under-rim eyewear zy (zyyyyyyy9)2024-06-11T14:09:46Zsafebooru