Teresa’s head maid/nanny/governess-whatever warned her; if she went to Japan, she may encounter “various things”…Teresa just never knew that those various things would include falling in love, and not just with Mitsuyoshi, but with his friends, a simple life of school, having fun, and occasional cafe work…and with Japan.
At the airport Teresa all but confirms to Alec what Alec had suspected; that she has indeed fallen for Mitsuyoshi. But Teresa hasn’t abandoned her plan to marry Charles and become queen. That duty remains extremely important…but now it is competing with…various things.
With the air between the girls cleared, the next time Teresa is near Mitsuyoshi, she stiffens up and becomes conspicuously…formal. Mitsuyoshi does not change in turn; he merely continues being the kind fellow he’s always been, plucking a caterpillar from her hair, picking up her eraser, and lending her and Alec his umbrella (though it eludes me how someone as meticulous as Alec would forget hers).
Mitsuyoshi had hoped Kaoru would be able to share his, but neither of them have an umbrella, so they run through the rain. And the chances of someone in an anime getting a fever after getting stuck in the rain always hover somewhere around 99.999999999%, so Mitsuyoshi collapses. Teresa blames herself for taking his umbrella, and works a shift at the cafe with Alec so Mitsuyoshi can rest and recover.
Yui serves Mitsuyoshi her Special Red-Hot Rice Porridge (I’ll call it Reho-riho), but when Yamashita and Hajime leave his bedside, they neglect to bring down the dirty dishes, so Yui sends Teresa up to his room to fetch them.
There, Teresa finds herself all alone with the guy she’s fallen for, and the wind scatters his photos, all of them beautiful and full of love. Even with his fever, she can’t resist bending over to kiss him, but immediately tears up upon doing so, cursing herself for being unable to “stop.”
At this point its almost assured she’ll have to take a significant emotional hit in order to follow through on her royal duty to marry Charles, whom she simply does not love (though could presumably fall in love given enough time, as with some arranged marriages). But “in love now” tends to win out over “in love down the road, maybe.”
For now, once he’s better, Teresa seems poised to invite Mitsuyoshi to a day of Sky Tree Rainbow Shogun fun. And once she’s done having her fun, she’ll presumably return home and do her duty.