" With Jin finally back in shape after his long rest recovery in TEKKEN 7 , Jin finally understands his power or the devil gene within him . He will use it as his last resort to kill his father Kazuya Mishima " 

True Form Devil Jin is based from the movie concept in Tekken Blood Vengeance . Instead of having horns in his unstable form , he has crystal pikes and crystal wings instead of metallic . The crystal represents Kazumi's devil form which they grow in her shoulders , knees and her ankles . Instead of red hit effects , he uses blue instead . True Form Devil Jin can be played only in story mode after playing devil Kazuya and his rage art is instant death . His rage art animation will be based from the movie scene where he beats Kazuya from the freefall then gives his final blow to kill Kazuya . True Form Devil Jin however uses both Kyoukushin and Mishima karate which make him the most powerful of the Mishima characters . Here are the list rage drives inputs for True Form Devil Jin  from what I've had in mind 

All of these rage drives are unlimited like Devil Kazuya 

DB 1,2 (Power stance that could trigger Jin's rage mode and it's unlimited )
F,n,DF 2 ( Mishima EWGF )
F,n,D,DF 2,1UF ( EWHF to Heaven's gate ) 
F,n,D,DF 2,3,3,1UF ( EWHF to hellsweeps then to Heaven's gate )
F,F 2  ( Demon's paw )
F,n,D,DF 1+2,3,2 ( EWHF to ETU then to Zen stance with heel kick then to corpse thrust ) 
F,n,DF 2 , BF 2,1,2 hold ( Mishima EWGF then to Tekken 4's charging laser cannon )
BF 2,1,2UF ( Laser Cannon to Heaven's gate )