**Hometown:** A Kind World
**Height:** 149 cm

Neurotic and contradictory, Riamu is a follower of the Menhera subculture and an idol otaku. Riamu makes the decision to become an idol due to her desire to quit school and as an attempt to turn her life around since Riamu fears aging out of her teenage years and feels she has hit a dead end in life. Riamu uses the catchphrase yamu ("I'm so sick"), and frequently makes references to the fact that she is lonely and depressed, as well as desperate for any kind of attention. Riamu seems to have incredibly low self-esteem and does not see herself as having any good points.

Riamu utilizes a lot of current otaku internet slang, primarily from Twitter. Riamu is terrified of being hated and begs her fans to be nothing but kind to her, but at the same time states that she doesn't care if she causes controversy as long as she gets attention and sells. Riamu's Valentine's Day 2019 lines imply that she thinks people coming to hate her in something inevitable, so she wants to receive as much love and attention as she can from them before it happens.

Riamu seems generally distrustful of idol otaku, despite being one herself, stating that she doesn't trust otaku who change the idol they support, and that she only has faith in otaku who attend events and concerts in person. She seems suspicious of idol otaku who claim to support every idol in a group (known as daredemo daisuki or DD), because she does not believe they will actually pay attention to Riamu herself. It can be inferred that these attitudes likely stem from Riamu's low self-esteem and her desire for her fan's undivided attention and support.

__Height:__ 155 cm

[Twitter](https://twitter.com/Hoshiki_seena) | [YouTube](https://www.youtube.com/channel/UC_gDRXFTXc5ljEBamxlBIMg) | [Wiki (jp)](https://ja.wikipedia.org/wiki/星希成奏)

She was a member of the idol group [AOP](https://anilist.co/staff/150932) until their disbandment in 2021.

On September 30, 2022, it was announced by her agency that she had been diagnosed with acute lymphocytic leukemia and would be taking a hiatus from voice acting and performing to receive treatment. On May 10, 2023, it was announced that she had been discharged from the hospital and will gradually return from her hiatus.

Seena Hoshiki

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