Kamen Rider Build Episode 38: "Mad World"
Air Date - June 3
Screenplay - Shogo Muto
Director - Kyohei Yamaguchi
Action Director - Takeshi Miyazaki from Japan Action Enterprise
Special Effects Director - Hiroshi Butsuda from Tokusatsu Institute
Ryuga Banjo (Kamen Rider Cross-Z) was able to free Sento Kiryuu (Kamen Rider Build) from Evolto (Kamen Rider Evol) using the power of Kamen Rider Cross-Z Magma but his personality has changed to Takumi Katsuragi. Sento Kiryuu (Kamen Rider Build) has regained back his memory as Takumi Katsuragi but he no longer has the memory of Sento Kiryuu.
Sento Kiryuu who is now Sento Katsuragi (not an Official Name but widely used by Fans on Social Media) warns Ryuga as the enemy who has the DNA of Evolto & begins his research on defeating Evolto. Misora Isurugi & Ryuga couldn't hide their confusion infront of Sento who has become a Cold Scientist.
Finally Evolto was able to attain the Ultimate Form called Phase 4 → Kamen Rider Evol Black Hole Form. Evolto who himself claims it to be Complete Form was surpassing the thinking of normal human. He was defeatless even if Kamen Rider Cross-Z, Kamen Rider Grease (Kazumi Sawatari) & Kamen Rider Rogue (Gentoku Himuro) attacked him together. Will they be able to defeat Evolto who had gained back the Ultimate Power which had destroyed Mars?
He once again possesses Soichi Isurugi. He makes a declaration to Juzaburo Namba that he will become the Leader of the Country.
Evolto gives the Evol Driver to Nariaki Utsumi and tells him to become a comrade. Utsumi feels the danger and begs Gentoku to fight together with him.
Namba makes use of Upgraded Remocon Bros (Fuu Washio) & Engine Bros (Rai Washio) to fight Evolto in Evol Black Hole Form. But there was no way to fight against the Power of the Complete Form. Kamen Rider Build, Kamen Rider Great Cross-Z & Kamen Rider Rogue also join them. They stand boldly against the powerful Evol Black Hole Form.
A New Rider Appears!?
His Name is Kamen Rider Mad Rogue.