Tokyo: I was tricked into marrying a yandere ghost

[This isn't just random writing; the author had a conversation with a female ghost in Japan in 1991.] Kiyokawa Kirito opens his eyes to find himself in an unfamiliar hospital room. Beside him sits an extremely alluring girl claiming to be his girlfriend, named Kawakami Tomie? The poor girl next door is Kawamata Kayako, the class representative is Yamamura Sadako, and there's even a mysterious being claiming to be a mermaid in his mind? Kiyokawa Kirito, inexplicably caught up in a supernatural tale, is a little panicked. He decides to try a crossroads summoning ritual to calm himself down... Love can't be used for speculation, but love can be used to cultivate a ghost. Only those who win the final ghost story deserve to be in love, right?