I wonder if the Kama Sutra is about to be referenced? Considering that Buddhism is a Vedic offshoot it wouldn't be that weird for some early followers to consider pleasure/love("Kama") almost as sacred as righteousness/morality("Dharma").
btw the furigana for Kokuryuu is Heiron because that's the japanified pronunciation of the Chinese 黑龙, which means 'black dragon'. I think the names are supposed to be pronounced the furigana way while the kanji is there as an explanation.