Mamoru was upstairs waiting for you to finish fixing T.B. He continuously grumbled whatever he had on his mind as he laid onto the couch.

"Stupid, stupid.." He repeated, with the scowl still present on his face as he tapped his foot against the tiled floor.

Finally you emerged from the lab, making Mamoru stand up. For a moment, he glares at you as if you've done something wrong–

That was until he wrapped his arms around you, his face on the crook of your neck, "You took long.." He mumbled.