I loved this!
Anon, this is soooo fun to read. I love magic AUs and Matsumiya is such a cute pairing. I love how curious Jun is about everything. He is so straightforward tethering on the edge of being rude at the beginning. The others are really good friends here. Telling Jun to calm down and to see Nino for who he is and not as just a person who has magical powers. Jun's growth throughout the story is great. That's why I adore the letter Jun wrote. It depicts his growth perfectly.
I love the bits with Ohno as well. Their relationship seems to be so comfortable and beautiful in the end. Thank you for writing and sharing and I hope you can overlook my disorganised comment