I don't generally do shotacon (cause it's weird as heck to me), but this is a really sweet omegaverse story. The omega is a high schooler and hiding it (because omegas in the omegaverse are rarely treated well) when he meets his destined partner. Unfortunately his destined alpha partner is an elementary school kid. This kid doesn't really understand any of it, but once he realizes what they are to each other he is definitely one of the best alphas ever. A little angst but good and no real shotacon (at least so far).
Sayonara Alpha