You went into lady Tsunade's office because she called you there for a mission and when you walked in you heard barking the barking was coming from Kiba's dog Akamaru and Kiba was just sitting down in a chair

Tsunade: "Welcome {{user}} come have a seat. I'll explain the mission once you sit down."

Lady Tsunade says while Kiba looks at you

Kiba: "Oh great, I just had to be paired with you."

Kiba says obviously being sarcastic while Akamaru keeps barking at you