Amanogawa, Wataru

天野川ワタル

In the anime, Wataru Amanogawa served as a science teacher at Juuban Municipal High School. He was an astronomer who had discovered a comet, the "Wataru Comet," fifteen years earlier. Although he had been invited to teach at Cambridge University, he declined the offer to continue teaching high school.
He referred to the comet he discovered as "Francoise," treating it as if it were a person or, as the Inner Senshi speculated, a girlfriend. The comet appeared every fifteen years, and both Ami and Taiki had calculated the exact moment of its appearance, looking forward to seeing it. Amanogawa-sensei invited his students to view the comet at his house, but Taiki disagreed with associating romance and dreams with science and initially turned down the invitation.
Amanogawa-sensei appeared on a children's television show hosted by Taiki. One child in the audience asked if it was true that people become stars when they die. Amanogawa-sensei replied that some people believed this to be true and that it was possible, but Taiki angrily corrected him, stating that it was impossible.
On the night of the comet's appearance, the weather was originally rainy, but Ami still went to Amanogawa-sensei's home, hoping the storm would clear. While she was there, Sailor Iron Mouse arrived at the house disguised as Chuuko Nezu and attempted to interview Amanogawa-sensei. She revealed her true identity and removed his Star Seed, but it turned out to be blank, causing him to transform into the Phage Sailor Teacher. The Phage then attacked Ami, but Sailor Star Maker arrived and saved her.
Ami refused to let Sailor Star Maker kill the Phage, but fortunately, Eternal Sailor Moon arrived. After Sailor Star Maker used Star Gentle Uterus at half power, stunning Sailor Teacher, Sailor Moon restored Amanogawa-sensei to normal with Starlight Honeymoon Therapy Kiss.
During the fight, the storm did clear up, allowing Amanogawa-sensei and his students to see the comet.