THE IDOLM@STER 765 MILLIONSTARS HOTCHPOTCH FESTIV@L!! was a two-day concert event that took place on October 7th and 8th, 2017. The concert featured a variety of songs and performers from 765 Production, such as ones from THE iDOLM@STER Million Live!, and took place at the Nippon Budokan Arena in Chiyoda Prefecture, Tokyo. Both days of the concert were filmed and released on Blu-ray in standard separate and limited edition boxset formats on November 21st, 2018.
Yuzu, a high school gyaru who hasn't experienced her first love yet, transfers to an all-girls school after her mother remarries. She's beyond upset that she can't land a boyfriend at her new school. Then, on her first day, she meets the beautiful black-haired student council president Mei in the worst way possible. What's more, she later finds out that Mei is her new step-sister, and they'll be living under the same roof! And so the love affair between two polar opposite high school girls who find themselves drawn to one another begins!
Takamiya Honoka is a regular student whose only problem seems to be that he sits next to Kagari Ayaka, the school's #1 beauty. They have never spoken to each other before and any small interaction between them immediately results in her fanclub beating him. Yet when a falling part of the school's building is about to send him to the afterlife, it's Kagari that comes to his rescue. Only... she's dressed as a witch, carrying him in her arms and floating on a broom?! Kagari tells him it is her mission to protect him and that now she can finally protect him openly rather than undercover.