Seira Otoshiro

"If you're 'do' then I'm 're'. If you're 're' then I'm 'mi'. I'll always be a step ahead of you!"

- Seira's main catchphrase.

Seira Otoshiro (音城セイラ) is one of the main characters debuting in the Data Carddass Aikatsu! 2014 Series and Season 2 of the related anime adaption, representing Dream Academy. She is a rock-genre character and a cool-type Aikatsu idol. Her primary brand is Swing Rock.

Appearance
Seira has pink hair, which reaches up to her waist and is tied up into a ponytail. Her eyes are orange and she sports a purple ribbon on her ponytail. Before her debut, she wore her hair down until Ki tied it up.

Personality
Seira is a leader type who loves rock. She comes off as confident and bold, but she's actually pretty shy and very humble. She is often seen giving Kii Brain Thunder when she is researching and/or collecting data. She loves cats and is sometimes seen playing her guitar.

Background
In the past, Seira played classical instruments but moved on to rock when she first played the guitar. Similar to Ichigo, her family owns a cafe: Cafe Vivo. She was part of a rock band before becoming an idol. Her sister, Noeru, was watching a Soleil show when Seira arrived from playing with her band she was inspired by how idols were able to create smiles among the crowd and decided to try to enter Starlight Academy, however she was rejected as the judges thought she fitted more as a rock singer than an idol. After the disappointing result, she came across the Dream Academy news on a magazine and demanded an entrance opportunity at their gates. Tiara Yumesaki saw Seira´s passion for music and her idol activities began as a student at the newly opened academy. Her dream is to create beautiful music that would make people smile as well as make her sister happy from the bottom of her heart.

Tamagotchi
Seira appeared in the Tamagotchi P's under her character name, Seira-chan-tchi.

Relationship
Kī is Seira's best friend and producer. When the two first met, they quickly bonded and became fast friends. They both support each other and Seira encouraged Kī to take part in the Pon-Pon Crepe Image Girl audition after hearing how much the girl loved the brand.
 * Tiara Yumesaki
 * Kī Saegusa

Seira and Ichigo were partners for the Unit Cup and Twinkle Star Cup. The two of them formed the unit 2wingS which came second in the Partner's Cup to WM, but won against them later on in the Twinkle Star Cup. Being initial rivals, the two girls often playfully fought and pushed each other to do their best in their idol activities.
 * Ichigo Hoshimiya

Etymology
Otoshiro (音城): Oto (音) means Sound. Shiro (城) means Castle. This could be a reference to her love of music and having perfect pitch.

Seira (セイラ) means Holy or Good.

Trivia

 * Her zodiac sign is Scorpio.
 * Her favorite food is baked cheesecake, as mentioned in Episode 93.
 * In Episode 53, Ichigo mentions to Aoi and Ran that Seira really likes pickled vegetables.
 * Seira is the second character to use her Premium Rare coord for her debut.
 * Her aura contains music notes, lightning bolts, and a chain chandelier with crystals.
 * She shares her singing voice with Aoi Kiriya.
 * This makes her the first character to share a singing voice with another main character.
 * She later also shares her singing voice with Mikuru Natsuki.
 * She is the second character to have her hair match her theme color.
 * In 2wingS's shared aura, there are two types of flowers; Ichigo's primroses, the lavender balloon flowers which now belong to Seira. This makes Seira the first cool-type idol to have flowers in her aura.
 * Seira is the third idol to use an object during her performance.
 * Her birthday coincides with Pocky Day in Japan.
 * She addresses herself with the pronoun "Atashi" (あたし), which is a very informal and casual way for a female to address herself.
 * She is the only first generation Dream Academy girl to have two Premium Rare dresses.
 * Despite debuting after them, Seira has more Premium Rares than Kaede Ichinose and Sakura Kitaoji.
 * She is 158 cm tall.
 * She shares her birthday with Bell Renjoji.
 * Coincidentally, both idols are also in a unit with their pink-themed rivals.