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A Worm (Chrysalis) mimicked Aota (青田 )'s appearance to replace him at Seika School.
History[]
Background[]
Since the general director of Seika School has been colluding with a group of Worms for 7 years, they have used the ghost story of "cursed mirror" to lure students to the make a wish towards the mirror, and then let the Worms for mimic and replace the students who have visited there, relying on the Worms' ability to mimic the students to change the school's reputation. Aota is also one of the targets. One day during a morning run, a group of Worm (Chrysalis) mimicked the entire baseball team, one of them mimicked Aota, and presumbably killed them all.
Pretending as Aota[]
Sometimes later, the Worm as Aota's appearance returned to school as if nothing had happened, he participated in a regional tournament, where he led his team to victory with a performance worthy of the "ace and number four" player. Due to ZECT aware of the rumor for baseball team was dissappeared, he was monitored by the ZECT members for a week, but didn't shown any proof of he was a Worm. When Arata Kagami challenged him to a match, he showed off a pitching performance that was hard to believe for a middle school student. He struck out Kagami, who had even played in Koshien as a student, when the general directorsaw this, he expected Mimicked Aota to win the national tournament, Mimicked Aota promised to general director leave everything to him.
Later, when the general director's misdeeds were exposed by Soji Tendo, Mimicked Aota alongside Mimicked Keiko Koyabashi, appeared in front of Shun Kageyama. When So Yaguruma approaches, two Worms transformed into their original Chrysalis form to challenging against Kamen Rider KickHopper and Kamen Rider PunchHopper transformed by Yaguruma and Kageyama. However, they're unmatch to the Kamen Riders, soon after destroyed by their finisher attacks.
Personality[]
Although this Worm inherited Aota's memory and personality, due to the conditions reached with the school's general director, he did not hide his superior abilities as a Worm, and his performance in baseball games was better than the real Aota. He also obeyed the general director's orders very well, but because he did not pay attention to the details, their conversation were witnessed by Tendo, leading to their plan's failure.
Worm[]

Worm (Chrysalis)
Statistics
- Height: 214 cm~
- Weight: 124 kg~
The Chrysalis (サナギ体, Sanagi-tai) is the pupa form of Worm.
Powers and Abilities:
- Human Mimicry: Like all Worms, they can take the form of any human they see, duplicating their memories as well.
- Superhuman Power: Due to mimicked a baseball pitcher, with Worm's physical fitness, he is able to throws the ball so fast that normal humans cannot catch it.
Arsenal:
- Claw: The Worm's Chrysalis is armed with a claw on their right arm.
Appearances: Kabuto Episode 38
Behind the scenes[]
Portrayal[]
While mimicking Aota, this Worm (Chrysalis) is portrayed by Nao Tsubaki (椿 直, Nao Tsubaki).
Concept Art[]

Worm (Chrysalis) concept art
Worm (Chrysalis) was designed by Yasushi Nirasawa (韮沢 靖, Nirasawa Yasushi).
Notes[]
Appearances[]
Kamen Rider Kabuto
- Episode 37: School's Ghost Story
- Episode 38: The Dangerous Younger Sister