Schrodinger's True Daytime Senpai [Crossover]

In her final year of high school, Mahiru got together with her younger neighbor, Yuji. Although he was younger, her boyfriend was emotionally intelligent, thoughtful, and gentle, and he fully supported her writing career. But after only two months together, he broke up with her, then transferred to a school in Tokyo without another word. Mahiru used the little money she'd earned from writing to buy a Shinkansen ticket, only to witness her ex, who had suddenly turned into a punk, pull out his own heart right in front of her... - The ideal type Yuji had proclaimed countless times vanished the moment he met the older girl next door. Ideal type, what ideal type? An older girl is the ideal person! At last, after winning her over, an accident at the Occult Research Club pulled him into another world of "curses." To keep his beloved out of danger, he painfully broke up with her. - But he never expected that, on the brink of death, he would see his ex-girlfriend again. She said, "Sorry, but I'm invincible in the mental world." *Jujutsu Kaisen / Bungo Stray Dogs / Haikyu!! *The heroine is a psychic esper. *Older woman-younger man romance. The pairing is Yuji. *The cover character and all other materials are licensed for commercial use online and are not exclusive. Theme: Love and salvation.