r2-d2 (artist), imca, riela marcellis, senjou no valkyria, senjou no valkyria (series), senjou no valkyria 3, breast hold, bad id, bad pixiv id, 00s, 10s, 2girls, blue eyes, blush, breasts, covered erect nipples, crossed arms, darcsen, female focus, gradient hair, hair ribbon, hands on own hips, large breasts, long hair, midriff, multicolored hair, multiple girls, navel, nipple piercing, nipple tag, nipples, nude, open mouth, piercing, ponytail, purple hair, red eyes, red hair, ribbon, side ponytail, two-tone hair, white hair