Alas, in context the Roy-Riza interaction is much less hot than appeared. 'Twas ever this: Japanese everythings look so hot when you know nothing. But I'm sad. I was seeing nuanced and transgressive superior-underling erotesis and what I got was another variation on The Woman Betrayed. 'I trusted you and look what you did!' with The Woman, as ever, representing the higher moral ground. Pfui.
But it would have been hot if it'd happened after Riza joined his squad, she says mulishly.