Been imagining another Pokemon Trainer reader book.... don't know if I'll actually write it but
Reader is a young adult (probably early 20's) and is a vigilante/villaon perhaps and finds Eri way before the heroes do and takes her in. Just. The whole book is Reader learning to be a parent figure for her and helping her overcome her trauma while being on the run.
I can't actually imagine the reader falling in love with anyone so it wouldn't be an x reader thing. But still, the visuals are in my head