u5 oekaki, kal'tsit (arknights), arknights, commentary request, 1girl, animal ear fluff, animal ears, bare shoulders, border, breasts, bright pupils, closed mouth, green eyes, green hair, grey background, hair intakes, halterneck, large breasts, looking at viewer, medium hair, off shoulder, outline, outside border, solo, star of life, unamused, upper body, white border, white outline, white pupils