Jujutsu Kaisen: If There Is a Tomorrow

Xue Baibai, an utterly ordinary nonhuman, a white ferret, failed to get into a human high school and decided to find work in Tokyo. Then she came across an old ad for the Tokyo Jujutsu High School entrance exam. Figuring she might as well give it a try, she headed to Tokyo...

Question: What made Satoru Gojo lose his memory, and what brought someone who should have died back to life four years later?

Also known as: Diary

[Warning! An unconventional ray of sunshine + an extra chapter with a couple + OOC + original female lead + everyday moments + shippable couples + ray of sunshine + little romance + little fighting + not purely friendship + devoted romance fans + slight romantic tension]

A story centered on Xue Baibai, so it's relatively short. The extra chapters offer some bonus content.