Hiyori Kotobuki

Hiyori Kotobuki is a mysterious ghost who abruptly materializes before an ordinary girl named Mizuki Kamimae, forcibly sharing her body without permission. Claiming she must accumulate spiritual energy to ascend to heaven, Hiyori pushes Mizuki into increasingly intimate encounters with her stepbrother Yuya. Cheerful, audacious, and undeniably alluring, Hiyori constantly lands Mizuki in embarrassing situations—yet her meddlesome antics unexpectedly bridge the emotional gap between the two new siblings. Beneath her carefree and flirtatious exterior, however, lies a hidden past shrouded in forgotten memories, a secret that slowly unravels as the story unfolds.