If you're looking for manga similar to Jujutsu Kaisen: Summer of Ashes, Autumn of Dust (Light Novel), you might like these titles.
In this book of Spy x Family original prose stories, Anya attempts to make friends with her target Damian during an Eden Academy camping trip, Yuri spends his day off babysitting his niece, and Franky seeks Loid’s help in winning the heart of a blind opera singer. Then, when the family sits for a portrait painting, Yor is terrified that her secret identity will be blown. And in the final story, the family is scrutinized by a pair of unseen observers... There’s never been a family quite like this one!
The story of Spirits Are Forever With You is set during the seventeen months following the defeat of Sōsuke Aizen, during which time Ichigo Kurosaki was still powerless. The novel centers on Don Kanonji and the title of Kenpachi; during which, the novel introduces the 7th Kenpachi, Kenpachi Kuruyashiki, and the 8th Kenpachi, Sōya Azashiro.