EXPLANATION: You will see this cutscene only if you choose, in chapter 7, to take Mint to the formal dance on planet Fargo by entering her room as opposed to the others. Mint accidentally trips and stumbles into Tact, quickly apologizing. I think Tact says it’s all right (I cannot understand Japanese), but then he blushes. Mint, as pointed out to me in the user comments, teases Tact about the fact that he’s blushing, but then SHE blushes, too, and Mint is then embarassed about her blush and what that obviously means about herself and Tact. It is HERE that Mint realizes she is falling in love with her commander, after being friends up to now.

WACOCA: People, Life, Style.