Eiko

Eiko is a playable character from the Senran Kagura video game series. She makes her debut in Senran Kagura: Portrait of Girls.

History
Eiko is the first daughter of a long standing noble ninja family that has spanned generations. Despite her being the eldest daughter of her mother, Fumiko was chosen to be the heir, even with her ambition and achievements.

While Fumiko hated the restrictions Asaki imposed on her, Eiko craved her mother's attention, leading her to burn down an entire human village and kill Fumiko's human friend. Eiko did this in an attempt to impress and aid her mother, who was suffering whenever Fumiko ran away to the human village. Eiko also wanted to teach Fumiko about responsibility. Eiko's bitterness towards Asaki continued to grow when Fumiko became more withdrawn after the death of her human friend. Eventually, she killed Asaki, thinking that her mother would finally acknowledge her.

Unfortunately, she was left disappointed as she watched Asaki die feeling at peace: she would finally be free from her own unhappy existence of competition. In addition, she was proud to witness Eiko's full power (for their family, killing an "opponent" is considered a mark of becoming an adult, but most of all it is a symbol of ultimate love). Eiko seeks to resurrect Asaki in an effort to kill and cause her unbearable suffering by her own hands.

Personality
Eiko has refined manners. Although she might have a polite, sophisticated way of speaking, her words tend to come with a biting edge. She values rules and demands that they are followed by others, no matter how strange they may be. Despite how rigid she may seem, she has a sense of humor. Eiko is portrayed as a no-nonsense character in the anime, yet Eiko's sprites in the games are often grinning.

Eiko is strict towards himself and others. She is an arrogant woman who demands perfection and dislikes submitting to weakness. Her personality takes after her mother Asaki, as she admired her throughout her life as the ideal lady, despite being ignored by her. Eiko orchestrated her mother's assassination in response to years of neglect and bitterness towards her younger sister. She wanted her to finally recognize her abilities, and thus killed her so that she would acknowledge her.

Though Eiko's words are harsh, they shouldn't be taken at face value. Sometimes she says things in order to invoke a reaction that amuses her. Her particular phrase is schadenfreude ("happiness in the misfortune of others").

Fumiko
Eiko resents Fumiko as a result of their complicated childhood, and she developed an inferiority complex because of her jealousy. Eiko caused the fire that lead to the death of Fumiko's first and only friend. Eiko's nickname for Fumiko is "Good-for-Nothing" (穀潰し Gokutsubushi). She also calls Fumiko spineless. However, these names seem to be more of teasing as it is revealed that she does care for her and does not all out dislike her. They often fight, but the latter considers it as 'playing'. They have rekindled their relationship, with Fumiko treating Eiko as her elder sister, calling her "big sister".

Asaki
Eiko admires her mother, and partially idolizes her as the perfect woman. As a child she sought her affection, although she neglected her in favor of her younger sister. This made Eiko jealous of Fumiko, particularly noting Fumiko's disregard for their mother's attention. Eiko also began to view herself as a second-rate person because, even if she was the eldest daughter, her younger sister was chosen as the heir. Asaki's neglect deprived her from a normal childhood.

Trivia

 * She is good at chess.
 * She can play the piano.
 * She can cook very well.
 * She is fluent in German.
 * She reads very well.
 * She is right-handed.
 * Eiko likes roller coasters.