gokuto-kun (imakiyo), kinuhata saiai, toaru kagaku no railgun, toaru majutsu no index, highres, 1boy, 1girl, ahegao, areola slip, blush, breasts, brown hair, clenched teeth, collarbone, cowgirl position, dark-skinned male, dark skin, elbow gloves, erection, eyelashes, gloves, groin tendon, hetero, imminent penetration, lips, male pubic hair, motion blur, motion lines, navel, nose blush, o-ring, o-ring top, penis, pink slingshot swimsuit, pubic hair, purple eyes, sex, short hair, sidelocks, skindentation, slingshot swimsuit, small breasts, steaming body, straddling, suggestive fluid, sweat, swept bangs, swimsuit, talking, tan, teeth, thick eyelashes, thighhighs, v-shaped eyebrows, vaginal, white gloves, white thighhighs