The Kamen Rider Agito novel was released a months ago, but here are some more spoilers about the retelling or should I say, a reimagining of the 2nd Heisei Kamen Rider show.
Source: billySEEDDecade of HJU
- The novel has more focus on Mana.
- The Overlord of Darkness and Overlord of Light is not mentioned.
- Akatsuki is a village instead of a ship.
- Shoichi and Hikawa are involved in the Akatsuki incident and Shoichi lost his memories after fighting a mysterious creature.
- The G3 System is created to fight the Lords/Unknown, not the Grongi.
- Taichi does not exist in the novel.
- Just like the series, the novel has some comedy and serious moments.
- The ending is a "the adventure continues" kind of thing. Although the battle with the Lords still continue, the novel ends in a bright note.
Source: billySEEDDecade of HJU
