Extreme Hearts

RISE

• Hiyori Hayama (葉山 陽和)
• She is a high school student and a guitarist. She originally came from Hokkaido but had moved to Kanagawa. Although she already made her solo debut, her career remained unsuccessful, leading to her label ending her contract. Not wanting to give up on music, her fan Saki introduced her to Extreme Hearts, a Hyper Sports league for idol groups. Outside of singing she also has a part-time delivery job.
• Saki Kodaka (小鷹 咲希)
• A middle school student and a fan of Hiyori's music. She has played football from a young age. She retired from playing but was regained motivation after meeting Hiyori for the first time.
• Sumika Maehara (前原 純華)
• A high school student and a former baseball player. She is Saki's childhood friend.
• Yukino Tachibana (橘 雪乃)
• [1]
• A high school student. Her family runs a dojo. Much is expected from her as her father and brother both died in an accident prior to the events of the series.
• Lise Kohinata (小日向 理瀬)
• [1]
• A middle school student and karateka. She uploads her moves online but hasn't been able to gain much of a following. She retired from karate competitions due to an incident where she accidentally injured an opponent, which continued to haunt her until she was recruited by RISE.
• QON-N4CX Nono (ノノ)
• [2]
• A manager robot assigned to RISE.

May-Bee

An idol group that won the Kanagawa Tournament during the last 2 seasons of Extreme Hearts.

• Hazuki Sakurai (桜井 羽月)
• [3]
• The leader of the group. A first-year university student.
• Tomo Miyashiro (御社 智)
• [3]
• The sub-leader of the group.
• Yuriko Suemune (末宗 祐里子)
• [3]
• The shortest member of May-Bee. Because of her height, she is often mistaken for a child.
• Chihiro Honda (本田 千尋)
• [3]
• Teena Merkies (ティーナ・メルキース)
• The tallest member of May-Bee. She is from the Netherlands.
• QON-N09M2 Sanae (サナエ)
• A manager robot assigned to May-Bee.
• Shinji Ibuki (伊吹 慎二)
• The producer of May-Bee.

Smile Power

An idol group that specializes in theater arts.

• Emi Hōjō (北条 恵美)
• The leader of Smile Power. Although athletic, her poor health keeps her from participating in Hyper Sports games for long periods of time.
• Aki Maeda (前田 亜紀)
• Yuka Hashimoto (橋本 由香)
• Mikoto Sawatari (沢渡 美琴)
• Miyabi Takao (高尾 雅)
• Miharu Tomonaga (友永 美晴)
• Aiko Tsukahara (塚原 愛子)
• A member who also serves as the co-manager of the group.
• Shōko Sasaki (佐々木 尚子)
• The main manager of Smile Power.

LINK@Doll

An idol group that was ranked second in the Kanagawa Tournament during the last season of Extreme Hearts.

• Maika Ayatsuji (綾辻 舞花)
• The leader and center of LINK@Doll.
• Shiina Miyamoto (宮本 椎奈)
• Shizuku Utsumi (内海 雫)
• Kotone Aiba (相庭 琴音)
• Ema Baily (エマ・ベイリー)
• Anna Hanamizawa (花見沢 杏菜)
• Lion Hasebe (長谷部 理音)
• A strategist for the group, she calls herself a team manager and a stage director.

BanShee

A kawaii metal idol band.

• RiN / Rinko Nakahara (中原 倫子)
• [4]
• The vocalist and leader of the band.
• NaO / Naomi Aida (相田 尚美)
• [5]
• The guitarist and sub-leader of the band.
• SaKo / Hisako Mizoguchi (溝口 妃紗子)
• [5]
• The bassist and main composer of the band.
• Tenko (テンコ)
• Kogata (コガタ)
• SAWA
• JOKER
• KONY
• Sumire (スミレ)
• Akamaru (アカマル)
• MINA

Snow Wolf

An idol duo composed of foreign talent. They are relatively new to the Extreme Hearts league.

• Michelle Jaeger (ミシェル・イェーガー)
• [6]
• The guitarist and vocalist. She is of German descent. Her family runs a company that specializes in medical technology. Although physically weak, she is very smart and athletic. A fateful meeting with Ashley Vancroft made her interested in music, leading to the formation of Snow Wolf.
• Ashley Vancroft (アシュリー・ヴァンクロフト)
• [6]
• The bassist and co-vocalist. She is a Brazilian American who went to Japan to study robotics. Michelle met her while working part-time at a robotics factory.
• Reni (レニ)
• A manager robot assigned to Snow Wolf.

Episodes