Ema's avid interest in the supernatural leads her to regularly participate in her school's occult club, where she eagerly seeks opportunities to explore the ghostly realm beyond standard expectations. Despite lacking the gift of perceiving ghosts that some of her peers possess, Ema tenaciously pursues encounters with spirits throughout the series. Her fixation with the paranormal is widely recognized in the school community, as she doggedly pursues apparitions through every possible avenue.
Throughout the narrative, Ema features prominently in Book 1, where she proposes a school excursion, and Book 3, where she engages in crafting time capsules as a means of securing happiness.
