In Episode 13 of Toaru Majutsu no Index III, the anime's infamous twins, Touma and Index, find themselves in a cramped, dimly lit closet, their breath heavy with anticipation. As they squeeze together, their bodies begin to betray them, their semi-clothed forms pressing against each other, igniting desires they've long suppressed. Index, her eyes wide with surprise, feels Touma's cock stiffen against her thigh, while Touma's hands tremble as they brush against Index's full breasts. Their hearts race, their breaths hitch, as they struggle to maintain their virtue, but the anime's all too familiar trope of incestuous awakening takes hold, and they find themselves consumed by their taboo lust.