The Manchester United star is downhearted after Japan crumbled in their World Cup opener and is desperate to prove to himself that he is better than Sunday's performance
Japan took the lead through Keisuke Honda in their World Cup opener in Recife, with the Elephants struggling for fluency in the final third.
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“They became more aggressive on the attack when Drogba entered the game; he became the origin of their front line's plays and we couldn't break that down,” Kagawa told reporters.
“I think we felt threatened by their front line and weren't able to attack aggressively in the first half because of that.
“Our defenders weren't able to find their footing and, after we scored, we essentially shot ourselves in the foot with our mistakes.”
The former Borussia Dortmund midfielder was downhearted as their long preparation for the tournament fell apart in Recife but is desperate to do himself and the team justice in their remaining two group games.
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“We were clearly too cautious. In last year's Confederations Cup we tried to prevent Brazil from scoring as well but today, even though we scored first, we weren't able to play the game at our pace and that's incredibly disappointing.
“It's disappointing [to play this way in my first World Cup] and it's hard to put into words but we have two games left and I don't want to give up so all we can do is look forward because we don't want to end our campaign like this.”