Aina felt that Leonel's reaction was a bit weird.
In truth, she had two favorite types of underwear. The first were loose boxers and the second were these skin tight plain panties. The latter allowed more freedom of movement but was less comfortable, while the former was far more comfortable to wear.
This time, she purposely chose to wear the second not just for her training, but because she thought they were more flattering to her figure. As expected, her heart rushed with excitement when she saw Leonel's reaction.
That said, she had also expected Leonel to practically lose control when he saw them as well. She was looking forward to seeing him react like this. Much like Leonel wanted to see her in throes of pleasure, how could she not also feel the same way?