The Ivory Coast international scored twice and came close to a hat-trick, but it was his link play and understanding with the 27-year-old former Ray Vallecano playmaker that had Swans fans purring.
"I feel good, but the most important thing was to win this game and not concede a goal," Bony told ITV4.
|66/1||Wilfried Bony is 66/1 with William to be the Premier League's top scorer
"It's going well, I am trying try to get to know Michu more and more because it is just my second game. It's important to concentrate in every training [session] and every game."
Manager Michael Laudrup spoke of his pride as his debutants shone, with Alejandro Pozuelo also scoring and defender Jordi Amat performed admirably, and the Dane believes there is still a lot more to come from the squad.
"They need games, of course. At Reading they played a bit together so it's only the second game," Laudrup reflected.
"We had five new players, we need some time for everyone to get to know each other but if we win 4-0 in a game like this with a lot of people not knowing each other yet... not bad, huh?
"It's a perfect night. Four goals, not conceding any away goals, two goals from the new man Bony, Michu is back scoring a goal, Pozuelo got a goal in his first game for the club, no injuries - it's perfect."