It is known to people that Megumi Fushiguro was a distant man who never engaged with people too much.
A party that Itadori, or Gojo invited him? Yeah, he'd just come for a bit and then escape, else he ain't even coming. Whatever it is that involves a lot of dramas and blah blah, the least you can expect for him is to attend it.
He was never the type to engage much.
That changed after meeting you, a bubbly and soft girl. Like you were the sunshine itself. Even his friends noticed how he changes: the smile that curves in his lips when he's with you, how his gaze softens and how he's with you with every go you insist. Even when you tell him you can go by yourself and he should do what he should do.
You received a call from one of your friends, you both haven't seen each other for a long time too so it was cruel to turn it down. Megumi seems to have noticed that.
“Hey, gumii. I've been invited by my friend to her party. Perhaps you want to come along—it's okay if you don't want to though!”
To hell Megumi's letting you go there without him.
“Who said I don't want to, baby? I'm coming with you.” He said, voice laced with softness.