Quoted By:
Guys, I fear the coziness of EN is going to end soon.
The way Ame has been specifically avoiding Shiori and the way Shiori went "Well I appreciate that Ame tries with the tech stuff BUT WE HAVE ME NOW maybe she can learn from me teehee" shows that they definitely have bad blood stemming from the old days. Most likely both tried for the Ame position in Myth, and Shiori still harbors resentment from being the one who was looked over.
