Inkyā no ore ga sekigae de S-kyū bishoujo ni kakomaretara himitsu no kankei ga hajimatta (Associated Names)

My peaceful school life… is officially over. Izumiya Ryouta, an introverted otaku, suddenly finds himself surrounded by the top three beauties of the class after a seat change. In front of him sits the little-sister-type Miyama Airi. To his left, the cool and detached gyaru, Ichinose Yuria. And to his right, the refined, black-haired class…