Nibutani should grow up. Nobody says ANYTHING about their chuunibyo being embarrassing and stupid (besides Yuuta and her) Nobody teases the kids about it. Mori Summer is part of who Nibutani is! She should embrace it and just understand that their chuunibyo has a time and a place!
When you're in your teens, if someone starts reading a story that you made when you were a kid wouldn't you cringe? It's the same thing. While it's kind of a cute thing it's cringy AF for the person in question
Don't worry it ain't one. The ones that show interest with Yuuta, the one guy, are that eyepatch and the pink haired one. The other girls are barely interested with romance.