Sakura and Friends' Junior High School Life

Sakura and Friends' Junior High School Life (さくらとみんなの中学生活), was the first event released for Happiness Memories, which ran from 10 October 2019 to 24 October 2019. It released event specific Happiness Photos, room materials, and a game-only story which leads to the events of Clear Card Episode 9

Description
During the event, players completed challenges which unlocked scenes for an Game-only story line. At the end of each segment they were rewarded with a Gold Happiness Photo. Additional copies of these photos could be obtained in the event exclusive gacha. In addition to story, players were rewarded with Omake panels that could be used to craft room furniture based on Tomoeda Middle School. The items that could be crafted included:
 * Student Desk
 * Student Chair
 * Teacher's podium
 * Room cabinets
 * Blackboard
 * Room and Wall Tiles

Plot
* Yamazaki tells Sakura and fellows classmates about Tomoeda Middle School's "Seven Mysteries*