[The boss monster exhales, expression softening at mention of Frisk.]

I'm not sure how to put it into words. Worrying? I... was worried they would be hurt by other Monsters or killed by the king. I couldn't keep them in the ruins with me then, I doubt anything could. When Frisk sets their mind on something, it's hard to change their course. I was scared for them, but also proud. They helped so many monsters in such a short amount of time...