Shishunki Calculation (“Adolescent Calculation”) [English], by Tohzai

The male hero in this share deserves major kudos, he resisted TWO HOLE MONTHS the huge baiting his sister imposed on him, masturbating right under his eyes on every occasion. Usually, holding it in for two minutes is considered an amazing feat. Hats off.

Well, the rest is typical, it was a hidden love, the trigger to give in is that feeling that backing off equals losing the game, and – this is also typical, coming from the mangaka Tohzai – the drawings are excellent, arousing, well done, full of talent
I’ll just add there is close to zero censorship. ENJOY THE WINCEST FEST! And thanks to Hiltrax and The Tsuuyaku

For plenty more, why don’t you see The list of Tohzai’s works on Hentairules

And now, the download & gallery links

Open the Complete Pictures Gallery

Or you can also use the Alternative:
Zip Mirror #1 – or – Zip Mirror #2

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Smaller version incoming!
As of usual when ☑ the images are in high enough resolution and ☑ the archive is quite big for its number of pictures, and ☑ it offers a significant gain, and ☑ I have enough time to do it, if it may help, I’m offering you a smaller version, in which I resized the images, here from 3000 px to standard 1600 px resolution.
The zip shrank from 63 MB to 12 MB.
Personally, I prefer it for reading, and it takes less disk space.
Download links, Zip: Mirror #1 – or – Mirror #2 – or – Mirror #3