i second not making the assumption Mai has a father.
"Mai's other mother and I were playing the nationals in a mahjong elimination match, sponsored by an IPS company. Just as a joke, we both wore those 'panty' things they say girls used to wear. And when the wind blew our miniskirts up, we were both wearing pink ones with flowers on them, so we had a good laugh. The grand prize for that match was an IPS baby, and we were really getting along, so ..."