History Recap / KamenRiderBuildEp31SurgingMagma

* EvenEvilHasStandards: [[spoiler: Rogue seems to disagree with how Nanba plans on using Pandora's Box (in contrast to his own plans of making Kamen Rider soldiers and using the box as a deterrent to unify Japan, Nanba wants to rule the world). He actually fights Sento and tells him that Nanba is impersonating the deceased Midou.]]

* HeroicBSOD: Ryuga suffers one when it turns out [[spoiler:Kasumi's transformation and death were all part of Blood Stalk's plan to make his Hazard Level grow.]]

* SelfDestructMechanism: Gentoku reveals that [[spoiler:he has a chip inside him that will kill him if he goes against Nanba's plans, hence why he tells Sento everything he knows in secrecy during their fight.]]

** [[spoiler: Ryuga was able to use the Pandora Box's power in the same way as Blood Stalk did.]]
** It's revealed that the person who researched Ryuga as a child was [[spoiler: Shinobu Katsuragi. Takumi (Sento's) father!]]

* ExpressDelivery: According to Sawa, Ryuga was born in ''two months'' of his mothers pregnancy.

->'''Sento''': A civil war has erupted over the incredible energy hidden within Pandora’s Box.
-->Touto,where Kamen Rider Build Kiryu Sento lives,
-->defends against Seito, which had been overtaken by Nanba Heavy Industries.
-->In order to end the war, Build sent out to recover the Pandora Box, but...
->'''Vernage?''': Our name is...
->'''Sento''': It can't be... the Queen of Mars!
->'''Misora''': Miitan, everyone's favorite idol!
->'''Sento''': Don't joke about the whole queen thing like that. [[TooSoon It's barely been]] [[BreakingTheFourthWall one episode!]]
-->Now what's in store for Episode 31?!

* EvenEvilHasStandards: [[spoiler: Rogue seems to disagree with how Nanba plan's on using the Pandora's Box (in contrast to his own plans of making Kamen Rider soldiers, Nanba wants to rule the world). He actually fights Sento and tells him that Nanba is impersonating the deceased Midou.]]

* HeroicBsod: Ryuga suffers one when it turns out [[spoiler:Kasumi's transformation and death were all part of Blood Stalk's plan to make his Hazard Level grow.]]

** [[spoiler: Ryuga was able to use the Pandora Boxes power in the same way as Blood Stalk did.]]

* EvenEvilHasStandards: [[spoiler: Rogue seems to disagree with how Nanba plan's on using the Pandora's Box (in contrast to his own plans of making Kamen Rider soldiers, Nanba wants to rule the world). He actually fights Sento and tells him that Nanba is impersonating the deceased Midou.