LOL. I did search right away for what it meant when I started reading this. I just couldn't continue reading without knowing it and how to pronounce it. And from my research it says its a man being castrated, meaning the guys balls cut off.
That's right. Bully for you for doing the research! A eunuch (an ancient Greek word) is a castrated man. It was very common in Asia, the Ottoman Empire and Europe: for serving in King's and Emperor's harems, ('cause there weren't any non-castrated men allowed in there), for singers who wanted to keep their clear voice, before the technique for developing boy's voices into countertenors was known, and also for medical reasons (to prevent early death for hermaphrodite children)... and for transgender girls, born into a male body, before hormonal treatment existed. In fact, in countries where there is no medical care for the poor, like India or Africa, transgender girls still have it done in order to prevent getting a masculine look.
But a boy who doesn't get it up because of some psychosomatic reason is by no means a eunuch (to be pronounced "yunick", btw). I wonder who made the mistake, the mangaka or the translator?
Seems like neither the Korean mangaka, the translaters AND most of you guys don't know what the word "eunuch" really means... One tip: it is NOT synonymous for 'impotent person'