Like that wimpy Tsuna going Dying Will or Goku going SS1-/-4.....
Mine is Amano Ginji going Raitei~
In general, I like Kotaro Minami's transformation into Kamen Rider Black.
In terms of manga/anime, I like Goku's first transformation into a Super Saiyan, and the Shield Liger's "transformation" into the Blade Liger.
When Gohan finally unlocked his full potential.
Piccolo's giant form.....
Luffy going into Gear 2nd.
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