Ena is a 2nd-year student who has good relationships with her classmates, her 2 fellow photography club members and seemingly Eita.
Komiya's nickname for Izumi was 'Mysterious Transfer Student' until she learned his name. Komiya was noticeably excited when she found out it was Izumi, that Natsume wanted to introduce her to since it was him she was looking for anyway. Komiya wants to use a photo of Izumi, she has captured for a photography competition and is very persistent, to the point of being pesky. Komiya grabs onto Izumi when needed, to continue or start a conversation. Izumi reluctantly gives her his LINE ID but Eita set conditions such as no stalking.
Komiya sends Natsume the photo of the mysterious transfer student, almost right after capture. They seem to be good friends and have each other's LINE IDs.