negu (pixiv 6519140), reisa (blue archive), blue archive, commentary request, highres, 1girl, alternate costume, animal ears, black cardigan, black thighhighs, blue hair, blush, cardigan, cat ears, cat girl, cat tail, hair between eyes, halo, heart, heart tail, long hair, looking at viewer, multicolored hair, open mouth, pink hair, purple eyes, seiza, sitting, skirt, sleeves past fingers, sleeves past wrists, solo, tail, thighhighs, two-tone hair, white halo, white skirt