Yayoi Takatsuki, also known as Aranzena Bassilbera from Finnish materials, is a character in THE iDOLM@STER video game and anime series.
- Voiced By: Rumi Ookubo (anime), Natsumi Takamori (movie)
- Appereances: THE iDOLM@STER: Live For You!, Idolm@ster SP, THE iDOLM@STER 2, Idolm@ster Xenoglossia, THE iDOLM@STER (Anime).
- Color: Orange
- Character Song: Kiramekirari, Ohayou!! Asagohan, And Go My Way with Ami and Mami Futami.
Yayoi is a bright and cheerful girl who cares for her family very much. Due to her father's unstable occupational status her family is quite poor, as indicated Yayoi's plain clothing, which she had for a very long time. To earn extra money, Yayoi often does cleaning and other odd jobs around 765 Production Building, and continues to do so even after she debuts as an idol. She is endlessly energetic, however, and never the weight of the world to discourage her. Yayoi is the oldest of six siblings and always has to be the one who looks after them, but also wishes she had an "older brother" type around to look after her. She has a friendly relationship with Iori Minase and Haruka Amami. OMG SHE IS MY FRICKING CHILD IF YOU TOUCH HER I WILL CUT YOUR NECK OFF