まじかる☆ちぇんじはるなちゃん～魔法のキャンディーはとってもＨな恋の味！～（Magical ☆ Change Haruna-chan ~Mahou no Candy wa Tottemo H na Koi no Aji!~）

A big breasted young girl, Haruna confessed her love to her tutor. He was her idol.
However, the young man's type was a small framed girl.
The broken hearted Haruna wondered around the city.
A mysterious fortuneteller approached her, and handed her some candies from the beautiful bottle.

"Those are magic candies. Your wish will come true, although it is up to you to believe it or not."

Still doubtful, but Haruna ate the candies. Then, she turned into a small young girl.

She looked exactly like the girl in the heroine in Musashi's favorite Anime!

Now, can she be the ideal young girl for the young man with the help from the magic candy? Or is she going to use her great assets (big boobs) to lure him into her?
A brother-complex, love-struck and highly sexual Musashi's sister Mizuru also gets into the action. A love and sex story are about to begin.

[From English DLSite]