The magical girl detectives of the CUREtto Detective Agency face a new challenge with the arrival of a new Phantom Thief. Voice actor Kohei Amasaki has joined the cast of Star Detective Precure! to portray Decchi Agein, a mysterious figure who enters the story as a formidable new opponent. His introduction expands the ranks of the antagonists confronting the Precure team.
Decchi Agein appears to share a prior connection with Usonoir, the Phantom Thieves’ leader. This relationship hints at deeper ties within the organization and raises new questions about the group’s plans. The addition of this character signals a shift in the ongoing conflict between the detectives and the Phantom Thieves.
Kohei Amasaki brings extensive experience to the role through several high-profile anime performances. He is widely recognized for voicing Otto Suwen in Re:Zero − Starting Life in Another World, Haruo Yaguchi in Hi Score Girl, and Neito Monoma in My Hero Academia. These roles have established him as a versatile performer capable of handling both dramatic and nuanced characters.
Decchi Agein made his first appearance in the preview for the latest episode, which you can watch below:
What is Star Detective Precure! about?
Star Detective Precure! serves as the 23rd entry in Toei Animation’s long-running Precure television anime series and has been airing since February 2026. The show blends mystery-solving with magical girl action while centering on themes of friendship, deduction, and time travel.
Here is the story description of Star Detective Precure!:
On her 14th birthday, Anna Akechi meets a magical fairy and suddenly time-slips from 2027 to 1999! There, she befriends Mikuru, a spirited girl who dreams of becoming a detective. When mysterious thefts stir rumors of the Phantom Thieves, the two transform into Detective Precure, using courage, deduction, and friendship to solve cases and uncover the secret of Anna’s journey through time.
Anna and Mikuru operate out of the CUREtto Detective Agency as they confront the Phantom Thieves and search for answers about Anna’s displacement through time. Each case tests their growing partnership and the strength of their resolve as Precure. The series continues to explore the consequences of the time slip while introducing new allies and adversaries along the way.
Star Detective Precure! streams exclusively on Crunchyroll, where episodes are released shortly after their Japanese broadcast for international audiences. Viewers can follow the full run of the series and catch up on earlier cases involving the CUREtto Detective Agency and the Phantom Thieves.
Sources: Official website and YouTube channel of Star Detective Precure! anime
