Gundam Build Fighters
Season 1, Episode 17: Model of the Heart
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On the first day of the tournament finals, Mao is scheduled to battle Sei and Reiji. But when he cannot think of a strategy to defeat the Star Build Strike Gundam, he returns to his mentor, Master Chinan, and asks him to teach him the master's ultimate technique.
All Episodes - Season 1
Episode 1
Sei and Reiji
Episode 2
The Crimson Comet
Episode 3
Full Package
Episode 4
Gunpla Idol Kirara
Episode 5
The Strongest Builder
Episode 6
A Reason to Battle
Episode 7
World-Level Ability
Episode 8
Encounters of Fighters
Episode 9
Wings of Imagination
Episode 10
The World Tournament Begins
Episode 11
Battle Royal
Episode 12
Discharge
Episode 13
Battle Weapon
Episode 14
Codename: C
Episode 15
Fighter's Radiance
Episode 16
Dad, We Meet Again?
Episode 17
Model of the Heart
Episode 18
Bloodhounds
Episode 19
Astray's Blade
Episode 20
Aila's Betrayal
Episode 21
Amid the Glittering Particles
Episode 22
Meijin vs. Meijin
Episode 23
Gunpla Eve
Episode 24
Dark Matter
Episode 25
Promise