One second, a girl was still asleep. The next, she had arrived in Namimori with a suitcase in hand. Her miserable struggle for survival begins now.
With an obnoxious System at her side and strange things happening to the protagonist every day, what is the girl supposed to do?
She spends her days boosting her affection points with the protagonist, tossing in the occasional sarcastic remark, and, if she's lucky, maybe even landing a job as an outside advisor to the Vongola. Out of 365 days in a year, there are always 364 that don't go her way. That's just her daily life.
The male lead is undecided, and there are multiple endings. I love harems and all that stuff (???).
Theme: A tribute to the manga I loved most during my chuunibyou phase.