hiten and Koharu....
idk - mebbe he was passing by a ningen village to terrorize and there she was...
yknow - i was thinking randomly and there are approximately 119 characters in inuyasha including all the supporting non-humanoid etc... and if the mix and match couples were limited to two people that cannot repeat (as a combination), then mathematically you would have
119C
2 which would equal 7021 possible cominations when order does not matter. However, if you factor in the "you must use one of the shipped characters from previous entry," that number becomes a lot less... so therefore, dokugans/dokugians...etc. would only have a finite number of pairings to put together...
makes me kinda sad.... >.<