[Indeed, she's starting to think he's taking it more seriously than she meant it. That long silence and those sighs make it pretty obvious. And while that makes her happy in a way, she's aware that that's a little mean, because he probably doesn't feel too good about it. Souji's a cool guy in a corny way, but... Well, that's not the point.]
Next time I test it out, I'll use it on you, Minato-kun.
voice; filtered
Next time I test it out, I'll use it on you, Minato-kun.
...Assuming it'd have an effect.