1boy, 1girl, arm support, ass visible through thighs, bangs, bar censor, bare arms, bare legs, bare shoulders, bathroom, black hair, blush, breasts, censored, clenched hand, collarbone, commission, covered navel, covered nipples, embarrassed, eyelashes, fingernails, furrowed brow, hair between eyes, hair over shoulder, hetero, kono subarashii sekai ni shukufuku wo!, looking at penis, looking down, lying, makina00, megumin, on back, on floor, one-piece swimsuit, open mouth, penis, pussy, red eyes, sex, short hair with long locks, sidelocks, signature, skeb commission, small breasts, spread legs, sweat, swimsuit, thighs, vaginal, water, wet