Yuu is very energetic, temperamental, boisterous, crazy, hardly ever worries about the consequences of his actions, but considerate of his friends' feelings & insecurities, is very impatient, excitable, impulsive, prone to blurting he's thinking in a loud & tactless manner. In-game, his attitude changes drastically, becomes incredibly focused, serious, calm & doing everything in his power. He is shy when it comes to talking to girls he hasn't met before. He's very hardworking, tenacious & brave.