Uniform Class Kyoudai no Etchi na Hon - Otome game no hametsu flag shika nai akuyaku reijou ni tensei shiteshimatta... Cartoon
(AC2) [GUN (いこ)] クラエス姉弟のえっちな本 (乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった...)
#354420 - I think she noticed because sometimes I couldn't help myself from staring. But I was sitting at the desk when she was helping someone in the row in front of me and then she turned around and dropped her pencil. After a few seconds she rose again and looked me in the eyes and blinked with her left eye.