It is, there are hints in the losing event!
I don't know when will I implement higher levels for the main character, or if I'll even do it.
The thing is, making bigger sizes would mean that I need to generate a huge amount of extra images for each outfit, custom sized event and custom sized trainings.
Besides that, after a certain size it's pretty hard to generate bigger sizes keeping a certain consistency with the character traits.
For now I prefer to keep adding content in other lines, keeping the "ultra" sizes for special events and special outfits.