As a world-famous superstar, Yajima Fuyuki has a secret that no one but himself knows.
He has no memories from before the age of sixteen, and under certain conditions, he can summon the kind of floating "giant sword" that often appears in the skies above the neighboring city.
Then one day, a girl who showed up out of nowhere, claiming to be his "girlfriend," was murdered right before his eyes, only to "come back to life."
Tomie: "Fuyuki, you mustn't forget me!"
Yajima Fuyuki: ...Is this some new prank show???
A few days later, Yajima Fuyuki, stabbed straight through, stared expressionlessly at the ghostly god before him who claimed to be his "younger brother."
Yajima Fuyuki: Am I going to hell now???
His ex-girlfriend is called "Tomie," the successor he's found is called "Zhou X Zun," the devoted little underling he raised from childhood is called "Zawa X Tsuna X," and the little tagalong from next door who was always clinging to him as a kid is called "Qi X Nan X"...
Yajima, Smiling His Way Through Life, Fuyuki: If I could choose, I'd rather never regain my memories and just be an ordinary "celebrity."
A certain smiling witch: Oh, I'm afraid that's not possible. Hell has already sent you an invitation to stay :)
One-on-one ending. The CP is tentatively Hozuki.