Okay, what character is that? My flailing around to identify it suggest that it is from the Korean section, but I don't have those in my Unicode cheat sheet. From what I know of Korean, that would make this two letters in one symbol, since they use an alphabet that gets arranged into one-, two-, and three- character syllable units, and I vaguely remember that the circle is a vowel similar to English "o".

(Everything I know about Korean I learned from the kid who sat next to me in 8th grade math and tutored me while we ignored the teacher.)