It's about the life a boy who loves this super hero female character from a show(the one in the picture above) and dreams about her all the time. One day when he starts school(not sure what grade, guessing elementary or highschool) when he suddenly meets a childhood friend after years had passed. She really likes him, but he seems to be stuck on that super hero female character.
(Source: MangaUpdates)

Meet Hana and Tohara. Two voluptuous women out to become fully fledged witches for life. To do that they just need to grant one wish to get their license. They see an opportunity in the form of a handsome Bishounen named Touma. But turns out he is a 24 year virgin otaku who is in love. Not only that, He has a not one, not two. But THREE wishes to grant... Can these Bodacious beauties take on the challenge?
(Source: MangaUpdates)

So your a high-school student and love your teacher. Why? Well, big boobs, nice ass, etc. However, your “sister” loves you. Almost seems like a story with no end. Problems arise as expected and such, but what if your teacher that you love and your sister’s soul interchanged and switched bodies. Which one will you love now?

Sakibara Eitaro is a 22 year old virgin. He's desperately trying to get laid - and that happens right at the beginning of the story with a girl named Maiko.
After that, Eitaro's relationship with girls change suddenly: he starts feeling more secure of himself and sex and starts meeting lots of girls. Three of these girls have a very important part in his life (Ninomyia Emu, Ide Miho and Jii Shinako) and his love adventures revolve around those women.