1girl, arona's sensei doodle (blue archive), black hair, blue archive, blush, bow, bowtie, breasts, cardigan, cleavage, dark-skinned female, dark skin, female masturbation, fingering, fingering through clothes, fingering through panties, halo, horn/wood, karin (blue archive), kneehighs, large breasts, long hair, masturbation, school uniform, sensei (blue archive), socks, solo, through clothes, very long hair, yellow eyes