Safe'ish lol(backround), but what is Hatsu doing so proudly?

Seems it's Shirayuki's turn to 'ride' in the tiller, after 'Buki had her turn.

I wasn't too into it from the thumbnail, but Murakumo makes it.

Is this an actual doujin?

Wow... Again sisters protect... almost too late though this time.

oracle135 said:

Is this an actual doujin?

It looks more like an art book. 28 pages for 990 yen (just over 9 US dollars)

Some of the sample pages shown on Melonbooks are already here on Danbooru.
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