Knights and Trickstar are supposed to participate together in a Live of fireworks. During joint practice, though, things between Izumi and Makoto are a little, er, awkward...
A Midsummer Night's Dream (真夏の夜の夢, manatsu no yoru no yume; lit. a midsummer night's dream) is an event story released on Jul 31st 2016. It could be obtained through point rewards during Remember! A Midsummer Night's Dream event and is free to read on Basic in ! mode.