Y'all don't get it .... since they reunited Tei has been seeing Shuraka as a child and Shuraka has been anxious about growing up because he thought Tei won't want him anymore
So now we see Tei finally accepts that Shuraka is no longer the child he remembers and that he is a man now .. so Shuraka tells him he is no longer a child ..meaning he wants Tei to finally see he as a man ... ergo mentioning the age thing

This is really hot, but I keep getting a little bit icked out whenever they mention Shuraka growing well or whatever. I'm fine with age gaps, but the fact that their "relationship" (I know nothing happened) started when Shuraka was a kid, and Tei an adult just squicks me out.