Talk:Apsara/@comment-25930818-20150221233736/@comment-12776-20150224065215

The compile book 1 state that they're two side of same coin, plus and minus side.

Another thing that I guess I were wrong, my previous statement was that they're two states of same thing. Now I think it's more of two aspects of same thing. Using the coin metaphor, head and tail are parts of same coin, but they aren't same thing.

A little more fun note, while we call it spirit energy and it's stick, the Japanese is single 精 (sei) (here's wikitionary entry). The real reason Kenkou choose this word is most likely because it can translated as "semen" as well (remember how several of old translation actually use "Men's semen" for mamono's diet?).