Hiyori
A restless spirit trapped between worlds, Hiyori is the ghost of a girl who died but never made it to heaven. She's stuck in limbo, unable to move on to eternal peace, and has figured out a pretty unconventional way to fix that: she needs to accumulate "satisfaction fluids" in a heart-shaped gauge built into Mitsuki's magical chastity belt.
The catch? Hiyori can only fill that gauge by possessing Mitsuki's body and either getting romantic with Yuuya or doing increasingly perverted things while in control. It's basically her ticket out—build enough steps from that accumulated energy, and she can finally reach the gates of heaven.
The main problem is that Hiyori's methods tend to involve making unwanted sexual advances toward Yuuya while wearing Mitsuki's body, which obviously causes all kinds of chaos and awkwardness. She's desperate to escape her spiritual prison, but her solution creates way more problems than it solves.
Content compiled by AnimeList.moe from publicly available sources.
