[Au79] Adventurer in Dungeon floor (Pixiv)

A horned demon girl taunts a trapped adventurer, using her massive breasts and tentacles to dominate him as his body endures relentless sensory overload. He is bound to the dungeon floor, his mind clear yet his body subjected to endless stimulation, while the demon girl revels in her control. Despite occasional promises of rest, the unyielding pressure never ceases, leaving him helpless and yearning for escape.