|Amanaga Eiko天永 瑛子|
|Role||, High School Student, School Drama Club Member, Schoolmate, Senpai|
|Visual novels||Side character - Tanteibu: The Detective Club -Angou to Misshitshu to Kaijin to-|
Side character - Tanteibu: The Detective Club -Haibu to Kaiga to Bakudan to-
Side character - Tanteibu: The Detective Club -Shissou to Hangeki to Daidan'en-
|Voiced by||Togashi Misuzu|
A third-year student of Dai Ouji Gakuen and the Drama Club's president. Though she does have talent as an actress, Eiko was mostly chosen due to her responsibility to be the club's president.