Ok, after reading first 3 chapters let me just say that family situation will be very awkward for their kids. "So you are my aunt, but you are also my other mother?" Yuki Suou would be proud.
But so far so good, MC does not look like complete loser and has some sense and guts (which I respect). And the twin sisters are mega degenerates and mega rich - exactly the kind of combination you want for erotica tag.
Subscribing for this story, hopefully it will not be cancelled after 3 volumes. To the TL team - thank you for the translation and your hard work.