After the defeat of Evolto, Kamen Rider Build and Cross-Z, Akira Kiryu and Ryuken Geki lived in the fused world. That is until Killabus the brother of Evolto erased the memories of Akira and the only thing he has is a rabbit. It's up to Ryu to help...
A/N: "The following oc belongs to ShiroWhiteWizard. Do me a favor follow him or Destroyer will come and destroy your home. Another shoutout."
Destroyer (Disguised as Akira): "Last time on Let the experiment begin 2: Heroes reunited the dark genius had hired two members to eliminate the pesky gear bros."
Hygami: "Hey Akira why are disrespecting us?"
Destroyer: He reveals himself "I'm Destroyer you moron. God this is why I made the right decision."
Itsuki: "You only wanted to destroy."
Destroyer: "And the two of you were soldiers. Now then what will happen next?"
———————————————————————— Starting off at night where in a unknown place where people were creating another build driver but however they heard the sound of someone coming
???: "Huh whose there-" Then the two people were knocked out as the unknown figure was wearing all black and carrying a bag full of bombs and the person that got knocked out was Shinbou Katsuragi
???: In a English voice "What a bunch of idiots." Then he grabs the build driver "Now with this I think I'll take my revenge... Kamen Riders."
The next day
As the unknown man who has black hair, red eyes, fair-tan skin, and a scar on his left eye started to walk away from the lab as he pressed the detonator and then the lab started to explode but not that much. As he looks back and pressed the detonator then a big explosion happened and then he ran
Meanwhile
Akira had to deal with Saji
Saji: He groans "My goodness." Akira wasn't giving any attention to it so he groans again and then Akira gave him his attention
Akira: "Saji what is it can't you see I'm trying to do something?"
Saji: "I try telling Sona how I feel about her but just like a train it just got ran over."
Akira: "Normally i'm trying to be nice but... please don't ask me about relationship go ask someone else like... I don't know Ryu, Hygami, or Itsuki because relationship is not in my department."
Saji: He sighs "Sorry. Also what are you doing?"
Akira: "Well i'm making these sclash jellies." He then shows a mini lab and then shows the two unlabeled jellies
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Akira: Then he looks at his phone "Oh look at that Dr.Stone is almost on after the news. Speaking of..." Then he pulls out his laptop and goes to the news
News reporter: "And this just in an unknown terrorist blew up a lab fortunately there were no casualties but however there were two witness that were there the night before the explosion happened don't recall what happened. And in other news..."
