Kurama Fights by Making the Environment Dangerous
Kurama's plant techniques are less about throwing energy at an opponent than changing what counts as safe space. Seeds, vines, the Rose Whip and Demon World plants let him prepare attacks before an enemy realizes the fight has started.
That style is why his victories often look unfair only after the explanation. Roto talks long enough for a planted seed to bloom. Toya thinks Kurama's sealed energy has removed his options until Kurama uses his own wounded body as soil. Elder Toguro's regeneration becomes the reason the Sinning Tree can punish him forever.
How you can tell
With Kurama, the important attack may have happened several minutes before the opponent notices it.
Debut: Ep 029 - Flowers of Blood
Yoko Kurama Is a Past Self, Not a Separate Transformation Gimmick
SPOILER!
Yoko Kurama is the fox demon thief Kurama used to be before he entered a human body and grew up as Shuichi Minamino. The Dark Tournament can temporarily pull that older body and power back to the surface, but the final arc makes the identity question explicit.
Yomi knew Yoko. Kurama's human mother knows Shuichi. Kurama has memories, loyalties and guilt from both lives. By the Demon World Tournament, the choice is no longer about which body is stronger.
What changed
Kurama eventually stops treating his human life as a temporary disguise. That is why his later decision to live as a human carries more weight than simply choosing the weaker form.
Debut: Ep 047 - Legendary Bandit: Yoko Kurama