No, Don't Open It So Wide Please...After a year of secret pining, second-year high schooler Haruka Shinozaki gathers the courage to ask popular class girl Akiho Kosaka to become his girlfriend. However, since this is Akiho's first romantic relationship as well, she begins to ask Haruka pragmatic questions about his sexual desires that he is left in doubt that this budding relationship will undergo a development for the better all too soon.