my review =)

Kamen Rider Gaim Gaiden (仮面ライダー鎧武 (ガイム) 外伝 Kamen Raidā Gaimu Gaiden, Kamen Rider Gaim Side Story) is a set of two V-Cinema (direct-to-video) releases that each serve as a spin-off of a character from Kamen Rider Gaim, featuring unseen stories which took place during the show.

Takatora Kurshima is continuing preparations of Project Ark, which would mean the salvation of humanity at the cost of numerous lives. Takatora’s resolve in seeing this through is put in question after a conversation with Kouta Kazuraba.

Kaito Kumon continues his search for the Over Lords after being egged on by Ryoma Sengoku. The objective: become stronger. Meanwhile, the heir of a foreign country, Shapool, visits Zawame as part of an inspection, and Kaito discovers this Shapool person is identical to him. Eager for some freedom, Shapool finds Kaito, sedates him and steals his clothes which then he appears before the Beat Riders posing as Kaito. Kouta and the others cannot believe their eyes when they see who they believe to be Kaito dancing with a smile on his face. Shapool then takes Mai to Charmant, where they eat one of the cakes Shapool has baked. Meanwhile, Kaito comes round to find out that a group led by Shapool’s butler Alfred had been looking for Shapool. Being identical, Kaito is mistaken for Shapool and taken by the group. Alfred then deduces Kaito's identity and has found out of Shapool's location, where he contacts Oren to take care of him. Kaito and Shapool encounter each other again, where then Alfred has found them and threatens to kill Shapool. Kaito protects him and learns of Shapool's story, as well as sharing his own story with Shapool. After finding out that Alfred has taken Zack, Kaito goes after Alfred.

This part is about Kaito aka Baron. It is funny to see he have Doppelganger that have a totally opposite personality than him. Seeing Kaito smile is so funny. :D This part have interesting and entertaining storyline.

Kamen Rider Duke

Ryoma Sengoku continues his research of the Sengoku Drivers along with Takatora Kureshima. Takatora thinks that the lives of humanity was the number one priority, however Ryoma disliked his way of thinking increasing the production with cost as the main priority than efficiency.
Meanwhile Sid and Yoko investigate a suicide attack that was taking place in Yggdrasill. The mastermind of this incident was Black Bodhi. They come to know that one of Ryoma's former colleague was part of Black Linden and had used the Zakuro Lockseed to brainwash people. Ryoma knows this is impossible, because his former colleague died in the Out-of-Control Lockseed incident a long time ago.

Source : wiki