IS: Infinite Stratos Encore - Koi ni Kogareru Sextet

During summer vacation, Charlotte attempts to spend time alone with Ichika at his home, but her plans are disrupted when Cecilia arrives with the same intention, followed by Houki, Lingyin, and Laura. The following day, Houki assists at a summer festival hosted at her family’s shrine, where she is unexpectedly joined by Ichika.