User blog:Memnarc/Character Ages

I was re-reading Darkness the other day and I noticed in Chapter 17 that the VMC (Venus Momo Club) refer to Momo as being 14 years old; while her entry here lists her (and Nana 's) age to be 12. While I'm sure it's possible that the twins lied to the principal to be enrolled (I doubt he'd care regardless), the fact that Momo's body is more mature than Mikan (who is also listed as 12 on the wikia) and since Nana is consisently referred to as being flat chested (while Mikan, who is allegedly the same age is not); this leads me to believe that To Love-Ru takes place over the course of at least a year. Given the number of chapters in the original series, this does not seem unfeasible. However, I am more versed in Darkness than I am with the original series. So can anyone clear this up for me, or rebut my theory?