Kouko Kaminaga

Kouko Kaminaga is a character from the Akuma no Riddle anime and manga.

Kouko is a former student at Myōjō Academy and of its 10th year's Black Class who was in a competition with the other students of that class who were trying to kill Haru Ichinose where the reward is anything what that assassin may want. The reward she wanted was to quit assassination. Before her expulsion, she held the position of class representative, which she passed to Suzu Shutō afterwards.

In the final episode, she is seen being chased by two nuns and she shoots them both. She is wearing Irina's crucifix necklace. It is hinted that she'll kill all the assassins in the orphanage where she grew up in order to escape from them and gain her freedom.

In the Heroes Coalition fics, Kouko is part of the Heroes Coalitions as a trainee. She also attends the Vanguard Academy as a student.

Appearance
She wears round oval shaped glasses and also has long straight black hair that she keeps in twin tails with curls at the bottom and has light blue eyes.

She usually wears a long blue and white dress. During her assassination attempt, she also wore Irina's crucifix necklace.

Personality
Kouko has a serious nature and lacks in emotion most of the time. Additionally, she appears to hold a large amount of guilt for causing the death of her mentor Irina.

Abilities
Although her grades were the best in the class, she's poor at physical assassination skills. However, she is a really smart and skillful individual who uses her brains quite resourcefully as seen when she drew up a blue print plan for the entire dorm where the entire Black Class stays in. She is also a bomb specialist, where she can create and set a trap almost anyhow using any types of bombs.

Trivia

 * When she was expelled, a red spider lily was placed on her desk. In Japanese and Chinese culture, this flower represents "death". This is symbolism for the "death" of Kouko's role as assassin.
 * Kouko and Suzu Shutou are the only two to use explosive devices.