Awww omg anon is hitting me with the Gofushi angst! ;A; I think Megumi would mourn in silence about that, but Gojo would notice it and he would give emotional support by being physically close to him, even if he doesn't say anything. And when Megumi suddenly hugs Gojo as he's still mourning, Gojo would hug him back and give him reassurances. After all, Gojo knows that one of the shikigamis dying hurts Megumi more emotionally than a human dying ... Gojo knows Megumi so well and they can always rely on each other