Kamen Rider Kabuto: God Speed Love

The Worms are alien parasites that arrived on Earth in 1999 via a massive meteor. They possess the ability to mimic human appearances by assuming the identities of their hosts after killing them, making them difficult to detect and fight.

After seven years of continuous war against the Worms, ZECT experienced internal division that caused the organization to split. The fracture resulted in Neo-ZECT forming as a separate faction, creating multiple competing powers fighting both the Worms and each other.

Souji Tendou is the masked rider who wields the Kabuto Zector, the central weapon system that enables him to transform into Kamen Rider Kabuto. He is the primary fighter leading the resistance against the Worms.

The prolonged conflict between ZECT and the Worms, along with the alien invasion itself, devastated the planet's ecosystem. Seven years of constant warfare left the Earth largely destroyed and uninhabitable.

The Kabuto Zector is the transformation device and weapon system used by Souji Tendou to become Kamen Rider Kabuto. It is the key tool enabling the Masked Rider System to combat the Worms.

In 1999, a massive meteor collided with Earth, bringing the alien Worms to the planet. This event triggered the beginning of the war between humanity and the Worms, leading to the creation of ZECT and the Masked Rider System.

Souji Tendou uses his position as Kamen Rider Kabuto to offer his power to either ZECT or Neo-ZECT. His motivations for choosing which faction to support remain unclear, contributing to the ambiguous ending of the film.

The Masked Rider System is a defensive organization created by ZECT to combat the Worms. It involves specialized fighters like Kamen Rider Kabuto who use advanced technology and transformation abilities to engage the alien threat.