Kagawah isn't the only "femboyish" person in the world,
and he is very happy to find someone alike
or atleast with the same body structure like him.
As he learned more of his new friend,
he also learned that this little shy troll was also mentaly femboyish,
unlike Kagawah who tries to be as masculine as possible(with little effect).
To make him trust him, Kaga wanted to to show they are alike and
could create a strong bond between.