I've read this fic three times! I really loved all the relationship dynamics and Hermione making a deal with Grindelwald was thrilling. I didn't catch on exactly what was happening with H the first time around. This was was so well planned. When you said bittersweet ending I thought something H said in passing about her even falling in love with R when he was older was in the cards, but I liked the ending. It made sense this time around somehow, knowing how self-sacrificing these two are. I liked all the small details.