Sonic X Frontiers: Reimagined

Sonic X Frontiers: Reimagined (AKA: Sonic X Season 4: The Starfall Island Adventure saga) is an animated/anime series made by Sega, Sonic Team and TMS. It is a sequel of the tv series of Sonic X
Plot
Several years after the event of the original Sonic Frontiers and the Mecha Sonic saga. Sonic the Hedgehog is investigating the strange anomaly happen across universe after universe, but it is not as easy as it seems until he stumbles into an alternate universe where Cosmo and Shadow are still alive after the Metarex war. With the new evil forces around, Sonic teams up with his alternate version and the gang to fight against the new threat.
Development
Sega, Sonic Team and TMS started making an animated series after the success of Sonic Frontiers. They start making an anime series about Sonic again after two decades since the original Sonic X. Making the crossover between Game canon and X series also the sequel of Sonic X, technically as season 4 of Sonic X. The Sonic X series take place on the alternate universe what if Cosmo is brought back by Sonic and Shadow using Chaos Regeneration.
Music
Sega, Sonic Team and TMS use all musics from some Sonic games and Sonic X theme in Sonic X Frontiers .The list of music in Sonic X Frontiers: Reimagined
I'm Here
Undefeatable
Find your Flame
His World
Reach for the Star
Knight of the Wind
Live and Learn
Break through it all
I'm with you
Seven ring in the hand
Sonic DRIVE
Hiraku Michi/The Shing Road
Opening/Ending
Opening 1: S.O.N.I.C DRIVE 
Opening 2: I'm Here 
Ending: Hikaru Micchi (The Shining Road)
Final Ending: I'm With You - Vocal version
Trivia
*This is the first crossover series including main Sonic series crossover with TV Sonic series
*This anime series is the sequel of original Sonic X also technically Season 4 of Sonic X