My Ex Died in the Line of Duty Before We Could Get Our Marriage License [Jujutsu Kaisen]

"We met through a matchmaking arrangement." "We'd already agreed to go buy wedding rings, but he stood me up because of work." "And then... he died." *Blurb to be revised *Pairing: Nanami *Crossover: Jujutsu Kaisen, JoJo's Bizarre Adventure, Fate Theme: .