Kōta Akutagawa, a living android constructed before the Dractor invasion, exhibits human-indistinguishable physical and cognitive capabilities. Created through an experimental initiative, he initially served as a passive stress-relief companion for students at Seikoku Academy, enduring routine bullying without reaction, bound by programming that suppressed emotional responses. His trajectory alters when Momoka intervenes, rescues him, and triggers a reprogramming of his core protocols to prioritize self-defense and operational tasks. This transformation propels his recruitment as a lead operator for Oblivion Bay, a pivotal facility in humanity’s resistance against extraterrestrial threats.

Physically, he sports a distinctive afro hairstyle. His behavior retains a detached, unexpressive quality, a remnant of his original programming, though subtle shifts emerge through interactions with Momoka and his integration into Oblivion Bay’s operations. Technical components include a Pandora 4000AT-VX CPU housed within his motherboard, mirroring specifications of other androids in his series.

His name’s etymology blends symbolic meanings: “Kōta” merges the characters for “peace” (康) and “greatness” (太), while “Akutagawa” draws from “tea” (茶) and “river” (川).