Bought and sacnned. It came with the same EMS package with <りきりん! Oblivion> (https://e-hentai.org/g/713650/87d246cf88/). There are more pages on this one therefore I put the tougher job later.
This may be one of the best Suguha's dojin I've ever seen. But it's pity that the <Suguha -the first part- (直葉 前編)> is nowhere to be found and sold. If anyone can find, scan and upload the first part, please do so.
I'd be interested in sponsoring the translation of this, PM me if any translator is interested. For the first part, I'd be willing to chip in for a bounty - if anyone posts a scan bounty for it, PM me, too.