They look way too much like the actual Reimu.
Deibu looks <Boin> ... err
ya know, maybe that actually IS what a deibu looks like from a Yukkuri Marisa's perspective, would certainly explain how they end up with Deibu's so much....
And this happen they marry. marisa become a slave husband for wife Deibu. http://yukkuri.shii.org/post/show/58832/bodied_yukkuri-i-d_hit_that-marisa-non_violent-rei