
TV · 26 episodes · 24 min/ep · Sunrise
Keita Aono is an ordinary high school student who loves to chat with his friends about military technology and the girls in their class. One day, Keita is surprised and delighted by a new transfer student in his class, his childhood friend Hinoki Sai. But when Keita tries to catch up with Hinoki after school, he accidentally wanders into Bottom World—an underground amusement park whose opening was canceled due to an unexplained tragedy. As Keita explores the area, he eventually finds Hinoki in the cockpit of a strange robot. She is here on behalf of Akamatsu Industries, a company contracted with the secretive international organization Mode Warp to investigate strange cases of violence worldwide. After joining Hinoki in the robot, the pair attempt to defend themselves against the various attractions of Bottom World, which have come to life and become violent. However, they are unable to escape until a man with transforming powers—dubbed "Betterman"—joins their struggle. Faced with an enemy he does not understand and a slew of mysterious new technology, Keita joins Akamatsu Industries in a fight against a force they call "Algernon." [Written by MAL Rewrite]

Lamia Betterman
Main

Takehito Koyasu
Japanese

Keita Aono
Main

Kappei Yamaguchi
Japanese

Hinoki Sai
Main

Kyouko Hikami
Japanese

Shou Yanagi
Supporting

Shinichirou Miki
Japanese

Miyako Asami
Supporting

Houko Kuwashima
Japanese

Kaede Kurenai
Supporting

Yuuko Minaguchi
Japanese

Chandy
Supporting

Houko Kuwashima
Japanese

Sakura
Supporting

Junko Iwao
Japanese

Shigeru Akamatsu
Supporting

Chafuurin
Japanese

Kaori
Supporting

Umi Tenjin
Japanese

Bodaiju
Supporting

Kazuki Yao
Japanese

Hajime Yatate
Original Story

Hiroshi Yamaguchi
Chief Writer

Kouhei Tanaka
Music

Kouhei Tanaka
Theme Song Composition (ED)

Kouhei Tanaka
Theme Song Composition (OP)

Takahiro Kimura
Character Design

Takahiro Kimura
Chief Animation Director

Kunio Okawara
Layout

Kunio Okawara
Mechanical Design

Shirou Sasaki
Producer (music)