So I got curious about what was really happening and being said in the video, so I watched it a couple more times, pausing frequently.
Now it makes a lot more sense. Here's the first part:

"I, Mano Erina, became a PV director!"
(This is why you see her directing at the end.)

The 50-year-old section chief.
He's having problems getting through to his workers.

Genkimono and Genkimono-tamer.

And so, the story starts.
*whip cracks* "Ow."

The workers are talking bout non work-related random stuff.
"Hey... listen, you guys..."

"Section chief!"
The usurper speaks up...

...and starts going on about "intranet" and "infrastructure" and other blather.
The other workers are enthralled and...

...the chief is devastated.
But luckily...

he finds a bottle...
(Where'd it come from? I don't think even
he knows!)

of Genkimono!
But what do you do with a mysterious bottle of energy drink that appears out of nowhere?

Drink it of course!

"So dizzy..."
...But maybe chugging it wasn't such a great idea?

*time stops*

"WHOA! They've stopped! WTF?!??!?!"

Enter Genkimono and Genkimono-tamer.
*whip cracks* "OWWWW"

She commands Genkimono to do his thing on the section chief.
"FIGHTING SPIRIT!"
"??"

"Don't lose to yourself!"
The chief has some trouble getting going so...

*SLAP!*
A couple more slaps later...

"YEAH!"
I think he got it.

...But WTF they're gone!
Time is back to normal.

Usurper dude's still going on about "infrastructure" and junk.
Can you see what's coming?

*BAM!*
The other employees are shocked at what their meek section chief has just done.

He chews them out for having no heart!

The women are in love...
"So manly! <3 <3 <3"
"My prince! <3 <3 <3"

...and so are the guys.
"I want to be hit! <3 <3"
"Aniki! <3 <3"
"Fall in rabu <3 <3"

VICTORY
"Section chief... <3"

But lurking out of sight are the Genkimono and Genkimono-tamer!

"Genki!"