Net Ghosts @ Large Gathering!
Pit, Pot and Pat call upon Yuta and Hikaru to help them in the Web World because they are "in trouble" Source: crunchyroll
Aired 13/07/2008EP 15 - Net Ghosts @ Large Gathering!

2008
Web Ghosts PiPoPa
About a young boy named Akigawa Yuta who gets sucked into a virtual world through his cell phone. He meets three strange creatures that travel with him on Yuta's adventure in this strange new world.