We don''t have any squad leaders

Den noticed that there was a shortage of squad leaders, and he didn't want to have Takehiko or, heaven's forbid, Toma lead a team. He himself was also busy, and Shinji was of playing in the snow somewhere. So that meant he had to assign some of his anbu as leaders, which was fine because Den didn't have that many covert op missions that he'd need them for.

Haru was the first anbu to come to mind, seeing as Den had literally just promoted him a few hours ago. So he wrote a letter, or rather, he dictated it to his receptionist.

"Dear Haru Hyuuga,

we don't have many Jounin to lead a team, so I have taken the liberty to sign you up to lead one myself. You can thank me later, have fun with your genin.

Sincercerly,
Den."

Short and to the point, Den liked it. He chuckled as he finished saying what he wanted in the letter, "Man, it's gonna suck to be him. I'm gonna go see if there are any problem students about to graduate from the academy." Now laughing, Den would turn and head back to the elevator, wondering just how bad of a team he could find for Haru.

Haru scowled as Den walked away. He was starting to question that man's sanity. He shrugged, writing a letter to himself. 

"Dear Haru, lord of all ninja and master of Taijutsu, you have been requested in this time of dire need to lead a genin squad, as Den was too lazy to write this himself, sincerely,  

-A sexy receptionist" 

He wrote, sealing it in an envelope, opening it, and pretending to be surprised.

(Exit, Haru can lead genin squads)