After a somewhat slow start compared to the usual standard, coach Hansi Flick's team quickly proved why they were the best attacking team in the world last season.
Raphinha and Lamine Yamal led the impromptu play, before Gavi opened the scoring for the Catalan team in the 21st minute.
In that situation, Yamal passed two opponents before passing the ball to Gavi who was standing in an empty space right at the edge of the penalty area. The Spanish midfielder fired a decisive long-range shot, beating the opposing goalkeeper.
Just a few minutes later, Barcelona scored a second goal. Center back Gerard Martin suddenly rose, switching positions with left-back Alejandro Balde and making an accurate pass to Robert Lewandowski. The veteran Polish striker skillfully passed Daegu's goalkeeper to double the gap.
Blaugrana continued to show their overwhelming strength when scoring the third goal in the first half's extra time. Jules Kounde made a sharp pass to Gavi, who skillfully ran down the Korean team's defense before finishing from a tight angle, completing an impressive double.
The second half saw the appearance of Marcus Rashford - his third appearance for Barcelona - along with a series of other personnel changes.
However, Flick's side did not take long to find their rhythm. Dani Olmo assisted young talent Toni Fernandez (17 years old) to calm down and tap the ball into the near corner, raising the score to 4-0.
After that, Rashford made his mark with his first goal for Barca. Receiving a smart pass from Eric Garcia in the penalty area, the striker borrowed from Manchester United finished neatly, sealing a 5-0 victory for Barcelona.
Rashford's playing time has been tightly controlled by Flick after he moved from Man United. In Barcelona's first two pre-season friendlies, the English striker was only put on the field in the second half.
A similar scenario also occurred in the match against Daegu. However, this time, the 27-year-old player was able to leave his mark with his first goal for Blaugrana, while also showing his sharpness and speed on the left wing.
Saying goodbye to the "Red Devils", Rashford started a promising new chapter at Barcelona with the image of a player who was more diligent, more focused and ready to adapt to the philosophy of the new team.
If he continues to maintain his current form, the English star could well become a weapons of choice for Barcelona in the upcoming season.
As for Barcelona, they will return home to face Como - a team led by Cesc Fabregas - in the Joan Gamper Cup match. This will also be the final rehearsal before Flick's team enters the journey to defend the La Liga title in the new season.
