...I know this is a REALLY, REALLY random question, but you seem to be a Great Knower of Stuff and might know the answer. In the Rurouni Kenshin OVAs there is the odd scene when Kenshin and Tomoe are at Otsu; Tomoe gets up in the middle of the night and goes to what looks like the outhouse, seems to be in pain, and there is blood. Is she just suffering from *ahem* monthly cramps? And why on Earth would they put this scene in there? It has been confusing me for a few years...o_0
The scene in in this clip (around 2 minutes and 30 or 40 seconds in) http://www.youtube.com/watch?v=q8P_M-sLgaE&feature=PlayList&p=C39C116E59E833A6&index=9

Sorry this is random, but you seem to know so much as well as knowing other people who know Stuff.