Iroha Tamaki was walking to Mikazuki Villa in Kamihama city until someone grabbed her arm and Iroha turned around and saw a girl who looked to be 11 grabbing her hand.

“Iroha Tamaki or rather big sis Iroha..”

It was Nemu Hiiragi, a girl who was friends with Iroha’s younger sister Ui who was also friends with another girl named Touka Satomi and Nemu and Touka were leaders of a magical girl group/cult called Magius.

“I need to talk to you big sis..”

Nemu says as she teleported herself and Iroha to a private place so no one could find them but more specifically not to find Iroha, Nemu knew Iroha was trying to stop Magius plans.