>>283196680
Goodness me, Eris is such a Tyrannosaurus SEX that she makes the other two look like her little sisters. I'm a harem enjoyer, but I think there should have been more of cutting Eris loose on the other wives since it was already established there's action going on between the girls during threesomes, but I guess Rifujin thought Eris dominating Rudy but being shy around the other girls was a gap moe opportunity.
>>283189257
IIRC, it was heavily implied their foursome happened during vol. 26 of the LNs/vol 24 of the WN, at the very least.