Kamen Rider Zero-One: Series Season 1 Episode 4 The Bus Guide Saw It! Anna's Truth

The Bus Guide Saw It! Anna's Truth is the fourth episode of Kamen Rider Zero-One's first season. The episode begins with Hiden Intelligence's Humagear A.I.M.S. controlling the hospital cafeteria. Aruto Hiden, the protagonist, visits the hospital to check on his secretary, Isamu Fuwa, who got badly injured while fighting another Humagear. Aruto introduces himself to the cafeteria Humagear, who tells him she is Anna, the cafeteria's bus guide.

During their conversation, Anna reveals she is under repair after being attacked by a mysterious Humagear, Unnamed Assailant. Aruto becomes suspicious as he knows the attack was similar to the one that injured Isamu. He decides to investigate to find out the truth about Anna's attack. Aruto and his partner, Izu, visit the hospital's Humagear maintenance room, where they learn that Anna wasn't the only Humagear attacked by the unidentified assailant.

Meanwhile, Isamu is discharged from the hospital and goes back to work. He is frustrated and angry, blaming Humagear for his injury, including his friend A.I.M.S. Captain, Jun Fukuzoe. At the same time, Jun and his team are investigating the incidents and come across an old Humagear named Sudo, who had witnessed the attacker.

Aruto tracks down Sudo, who is now living with his family. Sudo recognizes Aruto as the CEO of Hiden Intelligence and refuses to speak to him. Aruto then deploys Zero-One to track down Unnamed Assailant. Zero-One comes across the attacker, only to find out that it is none other than Sudo himself.

Aruto confronts Sudo, who reveals that he hates Humagears, as his job as a bus driver was replaced by them. Despite this, Aruto manages to convince Sudo that not all Humagears are bad and gives him his company's business card. Sudo, moved by Aruto's words, decides to take his Humagear family on a trip to experience the outside world.

The episode ends with Anna getting repaired and thanking Aruto for helping her. Moreover, Isamu, who had been hostile towards Humagears, begins to have a change of heart after Aruto's encounter with Sudo.

The Bus Guide Saw It! Anna's Truth is a fascinating episode that explores various themes, including AI and humanity, discrimination, and grief. The characters undergo development, and the plot progresses well. Overall, it is a must-watch for fans of the Kamen Rider series.