Sis-cosplay -My sister looks so naughty in her cosplay... And I almost run out of sperm！- (d_172253 - とろとろめると)

‘See？ I took my panties half-off.’
This is a CG collection a beautiful， large-breasted college student and her little brother making love in many various scenarios.
This is the English version of the following URL manga.
本作は過去作品「姉コス」の英語翻訳版です。
Please note that there is no additional elements from the original Japanese version.
Junpei， the brother gets a boner when he peeps at his sister slowly taking off her clothes while cosplaying in a high school costume in front of a mirror.
The next day late at night， Junpei masturbates to her photos but he gets caught by his sister before having an orgasm.
Despite Junpei’s panic， she changes into her favorite costume and helps him masturbate. Junpei begins to lover her even more after she offers him her virginity...
Since that night， their relationship begins to make a big change.
In their daily life they stay as a normal older sister and younger brother， but then moment Junpei’s sister cosplays， things quickly become erotic.
They totally become crazy about sex in different situations.
It’s full of indecent cosplay sex which turns into much more than a brother/sister complex.
☆Fetish
Blowjob / Foot job / Hand job / Sixty-nine / non-nude erotica / Doctor and nurse role-play / Dry fuck（CFCM） / /X-ray/ Ceam pie
☆Costumes: Maid， Nursing clothes （white）， Chinese traditional dress， high school uniform （blazer type）
■Contents
Basic drawings: 10 scences
Main story with text: 111 pages
Without text ＋Bonus drawings 90 and 11 pages respectively
Size: 1600px x 1200px / 800px x 600px