Ch. 21In Naruto: Drinking Makes Me Stronger — Chapter 21
Yuu mistook Kakashi, Shisui, and another ninja for spies and attacked them while drunk. Kakashi stopped Tanaka Shuichi from explaining the misunderstanding and pointed out that Yuu had not yet taken the practical test.
- Yuu realized two ninjas were holding him and accused them of being spies from another village.
- Yuu flung Shisui and another Anbu into the air, then drew Shusui and declared he would deal with the spies.
- Shisui marveled at Yuu's strength and sword technique but questioned his thinking.
- Yuu decided Kakashi was the spies' leader and called him a little runt.
- Kakashi stopped Tanaka Shuichi from explaining the situation and reminded him that Yuu had not taken the practical test.