|Left to right; Kiba Shion, Shindou Chrono, Anjou Tokoha|
Taking place after a three-year timeskip, the series will follow Shindou Kurono, Kiba Shion and Anjou Tokoha as the new protagonists of G, with returning cast Katsuragi Kamui and Tokura Misaki serving as supporting characters. A website for the season went up shortly after the broadcast, describing the new characters introduced by G. Kurono is a protagonist who "lost his parents at an early age and relies on his own power," while Shion is "both the class clown and a cool young man, educated in fencing." Tokoha meanwhile is "a true Tokyoite girl with a graceful appearance." Kurono uses the never-before-seen clan Gear Chronicle, which brings together the destinies of these three towards an "impossible future, an impossible self signifying 'Generation.'"
Harmonics Messiah. Each of the main characters of G will be featured using a Stride unit, cards which are kept outside of the main deck and used after the ride phase of the turn; by discarding cards with total of 3 or more grade from the hand while the vanguard is at grade 3 or greater, a Stride unit can be placed over the vanguard until the end of the turn. So far this has not been treated as a ride, and according to the stream can be performed after a normal ride, meaning that break ride skills will not activate, and the Stridden card retains the names of both itself and of the base form it has Stridden over. The power of the unit Stridden is added to the Stride unit, however. The introduction of a "G-Assist Step" will see further interaction with Stride, allowing it to be performed to cope with being gradelocked.