Guilty Gear Xrd -SIGN-‘s Yellow Roman Cancel system has been the source of more than a few useful strategies in the game. Previously, players were able to use it to set up an option select against Dead Angle attacks as long as they had 25-49% tension. Now, another trick has been discovered that lets players use it to gain invulnerable frames.
According to eSports Runner and GREATFERNMAN, all characters in Guilty Gear Xrd can YRC the startup frames of their Overdrive moves. In doing so, they cancel the Overdrive before it consumes their tension gauge while at the same time retaining whatever properties the startup of the Overdrive had, such as first frame invulnerability, before the YRC activates. This allows players new options in certain situations and only costs 25% meter.
This technique exists in both Guilty Gear Xrd -SIGN- as well as in the newly released Guilty Gear Xrd -REVELATOR-. In the latter, it also allows players to YRC out of Burst Overdrives without consuming their Burst meter.
Sources: eSports Runner, GREATFERNMAN via IPLAYWINNER