The Ultimate Hacker

The Ultimate Hacker is an episode from season five.

Plot
Rief and Embless are playing video games in Embless' room when their site is hacked by a company who covers it in ads for riceballs. They attempt to track down this person.

After a long and not recalled adventure, they find out it was Kururu in the end.

Major
Embless

Rief

Kururu

Minor
Keroro

Trivia
"The ULTIMATE Hacker" from season nine acts a bit like a sequel to this, even making multiple references to the old episode.

Blurb
"Embless and Rief's private site is being hacked by a riceball company."