"mmm..."
He smiled softly
"Mmm...Mirio...?"
Mirio opened his eyes before looking at him, a smile forming on his face-
"..Yes Sun?"
"W-W-Would you-...would you um-"
He tilted his head slightly as he sat up with him. He did still have his arms wrapped around his waists, but eh- =v=
"Hmm?"
He rested his head on Mirio's shoulder, looking up at him. His face and ears were a bit red.
"I-I um....t-t-tomorrow it's um-...i-i-it's my b-birthday a-and I was w-w-wondering-"
"...If I would come?.. If that's what your gonna ask, then don't bother.. I would come to your birthday regardless of what you'd say.. I wouldn't miss it for the world!"
"H-Hf-"
He blushed harder, burying his face in Mirio's shoulder
"quietly Th-thanks Mirio...."
"...Of courseee, you don't ever need to thank me for something as special as your own birthday..~!"
"Mphhhh-"
He nuzzled into Mirio's neck, hiding his face more and making incoherent embarrassed mumbles
He moved his arms a lil bit higher, now hugging the middle of his back as he nuzzled his face into his neck-
"Youuuu are too cute for thisssss worlddddd~"