Which doujin is this from?

Tidal wave...

Not a real doujin, just a few pages the artist made and posted on his site. They sometimes do that.

Shame. Looks like a good doujin

It also took quite a while to post the finish posting the pages, I saw this like a year ago

would the 'overflow' tag apply here?

One would think so.

win!

fap

yuasa i just wanted to say i think you are the best artist in this bitch hands down. love your work