I Found a Friend on a Deserted Island

Juyuko wakes up one day on a deserted island. There's almost nothing on the island besides it. Just some weeds and a few trees. One kind is a fruit tree. And the other kind is...? Is that a tree? A strange creature appears: "My surname is Hagiwara, but I'm really not a plant... And even if I were, I think I'd be an herbaceous plant?" Content warning: Everyone can tell from the title which game this is riffing on, but the story itself has almost nothing to do with it. After all, I'm not allowed to write that, sob. A slice-of-life story about healing. It's an ordinary island-building story, more or less. The main character is a little detective, along with a whole assortment of obscure series. Whoever dies ends up on the island. Every now and then, a few apparently still-living, bard-like characters drift over from the neighboring Bungo Stray Dogs and Library stories. No CP. The protagonist doesn't even have a gender. If you absolutely have to call something a CP, it's the protagonist and its island. Theme: All life is equal