Gentsuki Vanilla is always nice. I guess the beginning was basically a short time-skip that lets us see the result of his training? I would've suggested saving it for a sequel but it was still nice to see.
...Using training as an excuse to feel her up though is something I can"t exactly...commend, but hey, it turned out alright so that's fine. Besides, she does seem to like him and he also says that he"ll do his best to become someone worthy of her so good on him.
And that ending...Well...Why not do both styles of training, eh?