S4·E120 Virtual Space
Aired February 14, 2009
Synopsis
Tsuna needs to be placed in battle so the contacts can be adjusted for the X-burner. Tsuna puts on gears that puts him in a virtual space to fight Moscas; he could die if he dies in that space. Later, Irie Shouichi moves the base again and places a virus in the virtual space and Tsuna must defeat it.