In the future Japan, aspiring Idol Singer Hiyori Hayama struggles with her career. She made her debut and got some fans but that's all. After being unable to properly promote her, Hiyori's agency ends the contract, but her former manager gives her one last piece of advice: try to participate in "Extreme Hearts" — a mixed sports competition large music labels sponsor to promote new and established musical groups.
Joined by her biggest fan — junior football star Saki Kodaka and Sakis best friend — former junior baseball star Sumika Maehara she starts the idol unit "RISE" and enters the competition to fulfill her dream.
Extreme Hearts is an original sci-fi sports idol anime with a script of Masaki Tsuzuki (of Lyrical Nanoha and Dog Days fame) animated by Seven Arcs and aired in the Summer 2022 Season.
Extreme Hearts contains examples of the following tropes:
- Android Identifier: All of the sports A.I.s have silver-white hair and either blue or golden eyes. However, this only seems to apply to the sports A.I.s, as other A.I.s such as Nono look completely different.
- Extreme Sports Plot: The sports the girls play are pretty normal, such as basketball, soccer, and baseball, but their use of special gear makes it extreme.
- Friendly Rivalry: "RISE" quickly befriends most of the "May-Bee" members during their joint practice despite them being rivals and despite the fact that "RISE" lost all of the practice matches.
- Heir to the Dojo: Yukino forced this role on herself after her father and brother died in car accident.
- Idol Singer: Hiyori was more like a normal pop-singer, but after creating "RISE" she and her groupmates started using the idol aesthetic and most of their rival groups are the same.
- Instant Expert: Downplayed with Hiyori. She had no real sports experience beforehand but she is naturally very athletic and puts extra effort in her training. She also has two very experienced teammates who help her out, and she still lacks the polished technique of a pro. Played straight with Saki, Sumika, and Yukino, who after one or two lessons have polished their singing and dancing.
- Robot Girl: a whole bunch of advanced A.I.s that look like cute girls are present in the series as support cast. But RISE manager/housekeeper Nono takes the cake.
- Three Plus Two: RISE starts out as a trio, and then goes onto recruit two new members more than halfway through the series.
- 20 Minutes into the Future: the series seems to take place in a relatively near future Japan with advanced AI and sports gear that significantly amplifies its wielders physical abilities.
