zhong xiansheng, doodle sensei (blue archive), sensei (blue archive), yuuka (blue archive), blue archive, commentary request, highres, 1boy, 1girl, armpits, arms behind head, arms up, beach, bikini, black bikini, black choker, black halo, blue sky, breasts, choker, cleavage, cloud, hair elastic, hair tie in mouth, halo, heart, large breasts, licking lips, long hair, looking at viewer, millennium science school logo, mouth hold, navel, ocean, purple eyes, purple hair, sand, sky, stomach, swimsuit, tongue, tongue out, tying hair